2004 Buick Regal Fuel and Emissions Systems

Name: Black Multi-Purpose Pigtail
Brand: ACDelco
SKU: PT2183
Price: 94.99 USD

Below you will find various in-demand Buick Fuel and Emissions Systems, components and accessories for your 2004 Regal. Advance Auto Parts has popular Regal parts like Air Flow Sensors, Gas Caps, Fuel Pumps and more. You’ll also find aftermarket and OEM Fuel and Emissions Systems for other Regal model years including 2002, 2003, 2011, 2012, 2013, 2014, 2015, 2016, 2017 and more. Select a category of 2004 Buick Regal Fuel and Emissions Systems below and start saving instantly.

Popular 2004 Buick Regal Fuel and Emissions Systems Categories

Fuel Tank Cleaning Kits

Air Flow Meters and Mass Air

Gas Caps

Fuel Pumps

Oxygen Sensors

Vapor Canister Purge Valves

Vapor Canister Vent Solenoids

Fuel Injection Pressure Sensors

MAP-Barometric Pressures

Manifold Air Pressure Sensors

Canister Purge Solenoids

Ambient Air Temperature Sensor Connectors

Fuel Tank Pressure Sensors

Fuel Pressure Relief Valve Caps

Pressure Regulators

Air Charge Temperature Sensors

Fuel Injection Idle Air Control Valves

Ambient Air Temperature Sensors

Fuel Injector O-Ring Kits

Fuel Injector Seal Kits

Fuel Injector Gaskets

Fuel Pressure Regulator Kits

Fuel Tank Lock Rings

Fuel Tank Filler Necks

Secondary Air Injection Relays

Fuel Level Sensors

Fuel Injector Connectors

Fuel Tank Sending Units

Fuel Line Retainers

Fuel Line Connectors

Fuel Pump Tank Seals

Oxygen Sensor Connectors

EGR Tubes

EGR Valve Gaskets

Ambient Air Temperature Sensor Clip

EGR Valve Connectors

EGR Vacuum Regulator Solenoid Connectors

Manifold Absolute Pressure Sensor Seals

Fuel Cap Tester Adapters

EGR Valve Motor Connectors

Fuel Pump Harness

Vapor Canister Vent Solenoid Connectors

Fuel Injector and Insulator Retainer Kits

Essential Fuel and Emissions Systems for 2004 Buick Regals

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$94.99

ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:

Protective outer coverings help provide long-lasting durability
Color-coded wires allow for easy installation
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$12.49

When replacing a fuel pump or module, it’s extremely important to clean the tank. Existing dirt, debris, and contamination stuck in the fuel tank can clog the brand-new strainer. Delphi’s Fuel Tank Cleaning Kit (FC01) and Tool (FC02) can help clean your fuel tank in less than five minutes. The FC01 includes a low-suds solution, cloth, and gloves that works together with the FC02 to help clean those hard to reach places without having to remove the fuel tank. Visit our Resource Center for helpful tips and tricks on fuel pumps, technologies, and more: https://www.delphiautoparts.com/usa/en-US/resource-center.

Product Features:

Helps avoid premature fuel pump failure
Lint free towel included
Low suds formulation
Removes harmful contaminants from the fuel tank

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$42.99

Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

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$32.99

CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

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$88.99

ACDelco GM Original Equipment Fuel Injection Pressure Regulators are mechanical valves that control fuel pressure in the fuel injector rail, and are GM-recommended replacements for your vehicle’s original components. Their spring-loaded valves return excess fuel back to the fuel tank. These original equipment fuel injection pressure regulators have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:

Helps provide constant fuel pressure to the injectors
Assists in cold engine starts
Helps maintain stable engine idle
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$51.99

NTK is the world’s largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle’s on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. Providing constant closed loop feedback to the ECU, oxygen sensors help to control the air-fuel ratio while alerting OBDII systems of possible problems with fuel delivery or catalytic converter efficiency. A ceramics company at our core, NTK uses state-of-the art technology enabling control of the ceramic element used in our oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.

Product Features:

OEM QUALITY: NTK is the world’s largest supplier of original equipment oxygen sensors with renowned quality that meets or exceeds OEM specifications
PRODUCT ENGINEERING: Based on OE expertise, but specifically engineered for the aftermarket, NTK Oxygen Sensors offer superior OE fit, form, function
OE TECHNOLOGY: Upgraded to the latest OE technologies, NTK Oxygen Sensors are designed to reduce OE failures, enhance durability and performance
EXTENSIVE TESTING: OE development includes vibration and thermal shock testing. Testing during manufacturing guarantees quality and reliability
EASY INSTALLATION: NTK Oxygen Sensors are equipped with OE specified, water-resistant connectors and harness accessory hardware for easy installation
ADVANCED CERAMIC SENSOR ELEMENT: 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects against element poisoning
NTK ADVANTAGE: Superior dual-coated platinum interface and thinner ceramic element produces fastest light off and response times with best durability

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$13.29

Recommended for replacement whenever the sending unit is serviced, this fuel tank sending unit lock ring securely retains the fuel pump assembly to the lock. Made of durable materials for reliable service.

Product Features:

Direct replacement – this fuel tank sending unit lock ring is made to match the fit and performance of the original ring on specific vehicle applications
Recommended for replacement whenever the sending unit is serviced, this fuel tank sending unit lock ring securely retains the fuel pump assembly to the lock
Durable construction – this part is made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

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$15.99

Fuel Cap Tester Adaper for use with Stant fuel cap testers. Color coded for easy identification. Made of durable plastic.

Product Features:

BAR Certified adapters
Adapter check’s a fuel cap’s ability to hold pressure.
Adapters meet EPA standards for recommended fleet coverage.
Check adapter application chart for specific makes and models

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$43.99

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$45.49

Protective outer coverings help provide long-lasting durability
Color-coded wires allow for easy installation
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$100.99

Innovative engineering, manufacturing technology and quality control ensure that Spectra Premium fuel tank filler necks meet or exceed the performance of the original equipment they replace.

Product Features:

Unit is designed to OE fit, form and function requirements accomplished by leveraging our OE fuel system design expertise
Unit is dual coated for enhanced corrosion protection
Fit tested on the very same vehicle application for which it was developed verifying first-hand that the design fits properly and can be easily installed
Unit is leak tested after production to ensure product in free from fuel and / or evaporative leaks
Tested with OE fuel cap to prevent evaporative emission and check engine light failure

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$27.49

Premium quality materials for longer service life
Sealed connections (where applicable) to prevent environmental corrosion and performance issues
Global coverage for import and/or domestic applications
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

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$6.99

Fuel Line Connectors, Retainers & Repair Kits

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$13.79

GM Genuine Parts Fuel Injector and Insulator Retainer Kits are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:

This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

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$78.99

Protective outer coverings help provide long-lasting durability
Color-coded wires allow for easy installation
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$19.99

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$6.29

GM Genuine Parts Fuel Pressure Relief Valve Caps are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:

Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

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$16.79

None

Product Features:

Reduces air pollution with proper sealing and venting
Manufactured from durable, long-life materials
Independently tested for emission control
Passes all state and federal emissions tests
Reduces air pollution with proper sealing and venting

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$54.99

Protective outer coverings help provide long-lasting durability
Color-coded wires allow for easy installation
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$44.99

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$52.64

Vapor Canister Vent

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$423.99

ACCEL Performance fuel injectors provides precise control of fuel delivery & atomization for improved throttle response. They are all new units: not modified stock units or remanufactured from used cores. They feature a low-mass disc design that ensures accurate metering control even at ultra-low & high duty cycles and higher fuel pressures. ACCEL performance Injectors can be used with gasoline or E85 and are great for blown applications where increased fuel pressure and precise metering are required. State-of-the-art manufacturing processes reduce flow deviations between injectors, which improve performance. Low- and High-impedance designs are available to match most commercial applications.

Product Features:

Provides precise control of fuel delivery & atomization for improved throttle response
All new units: not modified stock units or remanufactured from used cores
New low-mass disc design ensures accurate metering control even at ultra-low & high duty cycles
Operates at higher fuel pressures without loss of metering control
Great for blown applications where increased fuel pressure and precise metering are required
State-of-the-art manufacturing processes reduce flow deviations between injectors to improve performance

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$223.99

Delphi’s history is one of OE heritage and quality. Our global technical requirements include design specifications and validation testing based on over 100 years of OE experience. Our material selections, material thickness, and material types are built from OE specifications to exceed aftermarket expectations. We put in place strict manufacturing processes to ensure quality control in every part we make. Delphi’s pioneering spirit delivers innovative solutions designed to support the aftermarket in servicing the vehicles of today, and tomorrow.

Product Features:

No spacers or washers are required and they come with gaskets for an exact fit, saving time and labor
All parts used in the manufacture process are Delphi validated, tested and matched to the vehicle application, and manufactured in a Delphi ISO certified facility
Delphi’s OE line of EGR valves provides accurate exhaust flow and emission control
Available in port, back pressure, and linear configurations to cover many engine applications
Designed and built using high-temperature and corrosion-resistant materials that perform exceptionally under all engine environments
Each valve and seat is precision machined, helping to maintain long-term stability and performance
No audible regulator noise

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$27.57

The ACDelco GM Original Equipment Fuel Sender Seal is a GM-recommended replacement component that provides the same performance, durability, and service life as your factory original equipment.

Product Features:

GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$18.99

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$9.46

Fuel Line Clip

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$53.99

Premium quality materials for longer service life
Sealed connections (where applicable) to prevent environmental corrosion and performance issues
Global coverage for import and/or domestic applications
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

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$200.99

ACDelco Professional Mass Air Flow Sensor is a high quality aftermarket replacement component for one or more of the following vehicle systems: ignition, and/or engine fuel management. This premium aftermarket sensor is manufactured to meet or exceed your expectations for fit, form, and function.

Product Features:

Professional, premium aftermarket replacement
Provides the performance and dependability you expect from ACDelco
Manufactured to meet expectations for fit, form, and function

Upgrade your 2004 Buick Regal with Top-Quality Fuel and Emissions Systems

When it comes to maintaining or upgrading your 2004 Buick Regal, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Buick or enhancing its overall performance, Fuel and Emissions Systems are key to keeping your Regal functioning at its best. At Advance Auto Parts, we offer a wide selection of 133 Fuel and Emissions Systems for the 2004 Buick Regal, designed to meet your needs without breaking the bank. From Air Flow Sensor replacements to Gas Caps upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Fuel and Emissions Systems for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Fuel and Emissions Systems for your 2004 Buick Regal at great prices. Our Fuel and Emissions Systems inventory for this model ranges from just $2.49 to $370.38, with an average price of $73.17. Our 133 Fuel and Emissions Systems in stock come from 22 trusted brands, so you’re sure to find the right part for your 2004 Buick Regal without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2004 Buick Regal, we stock popular OEM and aftermarket Fuel and Emissions Systems from top names like FELPRO, DENSO, Carquest Premium, and more. FELPRO Fuel and Emissions Systems start at just $3.49 and boast an impressive 5 stars average rating from customers. DENSO and Carquest Premium also bring quality to the table, with Fuel and Emissions Systems available starting at $2.49, and at an average 5 stars rating. With 2,197 customer reviews and counting, our 2004 Buick Regal Fuel and Emissions Systems have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Fuel and Emissions System upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 2004 Buick Regal is always ready to roll. We’re committed to providing you with everything you need to keep your Regal in top shape, all in one place. Start shopping confidently below for your 2004 Buick Regal!

Best-Selling Air Flow Sensors for 2004 Buick Regals

Enhance the driving experience in your Buick with 24 quality Air Flow Sensor components, starting at $4.99.

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$67.05

Driveworks® offers a line of aftermarket parts and accessories that are commercially acceptable and competitively priced, which provides professional technicians and DIYers with an affordable alternative for repairs.

Product Features:

Direct-fit OE replacement ensures ease of installation
Designed to meet OE performance
As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need
As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need

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$89.99

ACDelco GM Original Equipment Manifold Absolute Pressure (MAP) Sensors measure intake manifold pressure, and are GM-recommended replacements for your vehicle’s original components. The MAP sensor is a part of the fuel and engine management system. Its signal is used by the engine control module along with the throttle position sensor to calculate the amount of air entering the engine so that the correct amount of fuel is injected for optimum combustion. These original equipment manifold absolute pressure sensors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:

Sends signals to the engine controls for optimal engine performance
Designed to adjust engine performance to various altitudes
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$20.49

Delphi temperature sensors are built with the latest OE technology; Delphi temperature sensors use durable, one-piece design; Delphi temperature sensors are impervious to electrical noise and interference.

Product Features:

Delphi temperature sensors are built with the latest OE technology
Delphi temperature sensors are impervious to electrical noise and interference
Part is validated, tested and matched to the right vehicle application
Delphi temperature sensors feature a one-piece lead-frame design from sensing element tip to connector terminals to help eliminate internal connectors and failure points

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$65.99

CARQUEST MAP sensors are manufactured with critical OEM components to ensure that your engine runs efficiently to reach the best gas mileage on your vehicle.

Product Features:

CARQUEST MAP sensors connectors are exact OE fit to ensure the proper vacuum is maintained to prevent power loss and to minimize internal contamination.
CARQUEST MAP sensors utilize high temperature resistant seals. Damaged seals can directly impact the vehicles fuel-to-air ratio, making it less fuel efficient.
CARQUEST MAP sensors are 100% individually tested for all product functionalities including proper vacuum seal and electrical output.

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$25.99

Building upon a foundation of premium full-line products established under NGK ignition and NTK oxygen sensor products, NTK¿s expansion to technical sensors is part of our ongoing commitment to streamline product types and increase coverage under one premium brand: NTK, The Sensor Specialist. With over 80 years of automotive expertise, NGK¿s family of automotive products are driven by extreme dedication to innovation, performance and quality. NTK is the only OE supplier with a full line of technical sensors in the aftermarket for import and domestic vehicles. Drawing from OE experience, NTK sensors undergo extreme testing conditions that include thermal shock, vibration and OBD verification. NTK sensors are manufactured to ensure a quality that meets or exceeds OE specifications. As new vehicles incorporate connected and automated technologies, trust The Sensor Specialist for full-line market support and OE application technology.

Product Features:

Air Charge Temperature Sensors are designed to meet or exceed OE specifications in form, fit and function to ensure proper monitoring of air temperature entering the engine
NTK’s Engine Coolant Temperature Sensors are manufactured to operational performance standards to meet or exceed OE fit, form and function to ensure proper engine operating temperature.

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$75.99

Building upon a foundation of premium full-line products established under NGK ignition and NTK oxygen sensor products, NTK’s expansion to technical sensors is part of our ongoing commitment to streamline product types and increase coverage under one premium brand: NTK, The Sensor Specialist. With over 80 years of automotive expertise, NGK’s family of automotive products are driven by extreme dedication to innovation, performance and quality. NTK is the only OE supplier with a full-line of technical sensors in the aftermarket for import and domestic vehicles. Drawing from OE experience, NTK sensors undergo extreme testing conditions that include thermal shock, vibration and OBD verification. NTK sensors are manufactured to ensure a quality that meets or exceeds OE specifications. As new vehicles incorporate connected and automated technologies, trust The Sensor Specialist for full-line market support and OE application technology.

Product Features:

NTK’s Manifold Absolute Pressure Sensors are manufactured to operational performance standards to meet or exceed OE fit, form and function to ensure proper manifold pressure, fuel metering and ignition timing.
The Manifold Absolute Pressure Sensor (MAP) provides manifold pressure information to the Engine Control Unit (ECU). The data is used to determine the air mass flow rate and required fuel for optimum combustion and ignition timing.

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$29.99

ACDelco GM Original Equipment Air Charge Temperature Sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional.

Product Features:

Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

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$40.99

BWD is an aftermarket leader, providing a premium line of engine management products. BWD manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.

Product Features:

Our control modules feature double wire bonds for better connections, greater dependability and longer life despite being subjected to intense vibration and the tough operating environment
Copper slug heat sinks provide better heat dissipation to prevent heat from damaging the module
Our ignition modules will respond to a weak signal from the crankshaft position sensor and begin energizing the coils immediately for better starts in cold weather
High-temperature polymer housing reducing moisture intrusion and minimizes vibration damage for extended life and improved reliability
Our ignition modules are durability tested for 500 thermal cycles ranging from -40C to +125C

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$27.99

NTK’s Air Charge Temperature Sensors are manufactured to operational performance standards to meet or exceed OE fit, form and function to ensure proper monitoring of air temperature entering the engine.
The Air Charge Temperature Sensor is used by the Engine Control Unit (ECU) to measure air density for fuel mixture control, which allows it to make continuous adjustments to the engine’s air / fuel mixture for maximum fuel efficiency.

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$22.13

The FAE Engine Coolant Temperature Sensor is an ideal high quality aftermarket replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:

Premium aftermarket replacement
Provides performance and dependability
Manufactured to meet OE specifications

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$58.18

Water Temp. Sensor

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$18.99

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$12.99

ACDelco GM Original Equipment Ambient Air Temperature Sensors are used with automatic climate control systems. The sensors provide the HVAC system controller with outside air temperature, allowing the controller to modify the climate-control strategy. The sensors may also provide the signal for the outside temperature in the driver information display. This original equipment ambient air temperature sensor is a GM-recommended replacement for your vehicle’s original components and has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:

Repairs the outside temperature display function caused by failed ambient temp sensor
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$30.68

Delphi’s Air Temperature Sensors are continuous function devices that change resistance inversely to temperature. They measure engine intake air temperature in the manifold, intake air duct, and air cleaner. A signal is then sent to the powertrain control module.

Product Features:

High-temperature thermoplastic shell for durability
Patented, lightweight, and cost-effective pre-mold subassembly
Design flexibility to match calibration criteria, meet mounting and packaging requirements, and integrate with systems
Customized packaging of mounting features, sealing options, connection system, and resistance output
Crimpless conductive path to the negative temperature coefficient thermistor and calibration certification for enhanced reliability and accuracy; also eliminates an electrical interface
100 percent resistance calibration verification helps ensure quality and reliability

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$109.99

Manifold Absolute Pressure Sensor

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$102.99

ACDelco Professional Manifold Absolute Pressure Sensor is a high quality aftermarket replacement component for one or more of the following vehicle systems: engine – mechanical. This premium aftermarket sensor is manufactured to meet or exceed your expectations for fit, form, and function.

Product Features:

Professional, premium aftermarket replacement
Provides the performance and dependability you expect from ACDelco
Manufactured to meet expectations for fit, form, and function

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$98.99

CARQUEST MAP sensors are manufactured with critical OEM components to ensure that your engine runs efficiently to reach the best gas mileage on your vehicle.

Product Features:

CARQUEST MAP sensors connectors are exact OE fit to ensure the proper vacuum is maintained to prevent power loss and to minimize internal contamination.
CARQUEST MAP sensors utilize high temperature resistant seals. Damaged seals can directly impact the vehicles fuel-to-air ratio, making it less fuel efficient.
CARQUEST MAP sensors are 100% individually tested for all product functionalities including proper vacuum seal and electrical output.

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$89.99

GM Genuine Parts Multi Purpose Sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:

Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

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$88.99

Delphi MAP sensors use the latest OE technology; Internally protected against moisture intrusion and vibration; Manufactured to meet or exceed OE requirements for 100,000 miles.

Product Features:

Insulated with silicone gel over the integrated circuit chip to protect against shock and vibration for increased durability
Internally protected against moisture intrusion and vibration
Long lasting and durable
Designed and engineered with Delphi expertise

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$56.25

The ACDelco GM Original Equipment Engine Coolant Temperature Sensor monitors the engine temperature, and is a GM-recommended replacement for your vehicle’s original component. The engine temperature signal is used by the engine control module to adjust the air/fuel mixture and ignition timing. This original equipment engine coolant temperature sensor has been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:

Undergo the same stringent testing process as the original part
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$34.99

An ACDelco Professional, premium aftermarket Engine Coolant Temperature Sensor is a high quality replacement for many vehicles on the road today. It monitors the engine temperature. The engine temperature signal is used by the engine control module to adjust the air/fuel mixture and ignition timing. This premium aftermarket replacement engine coolant temperature sensor is manufactured to meet your expectations for fit, form, and function.

Product Features:

Professional, premium aftermarket replacement
Provides the performance and dependability you expect from ACDelco
Manufactured to meet expectations for fit, form, and function

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$20.45

Ambient Temp Sensor

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$13.99

GM Genuine Parts Manifold Absolute Pressure Sensor Seals are designed, engineered, & tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:

Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

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$4.99

SPLASH SHLD COWL RET

Most Popular 2004 Buick Regal Gas Caps

Customize your Buick with 5 Gas Caps products like Gas Caps, all priced under $24.99.

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$17.79

Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.

Product Features:

Passes all state and federal emissions tests
Manufactured from durable, long-life materials
Reduces air pollution with proper sealing and venting
Independently tested for emission control

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$24.99

Protects your fuel from theft and vandalism
Passes all state and federal emissions tests
Manufactured from durable, long-life materials
Reduces air pollution with proper sealing and venting
Independently tested for emission control

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$22.99

Protects your fuel from theft and vandalism
Passes all state and federal emissions tests
Manufactured from durable, long-life materials
Reduces air pollution with proper sealing and venting
Independently tested for emission control

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$24.99

Come pre-assembled for quick and easy installation.
Several fastener options to work with any fuel cap compartment configuration
Fits vehicles orginally equipped with tether
Reduces air pollution with proper sealing and venting
Manufactured from durable, long-life materials

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$20.99

None

Product Features:

Protects your fuel from theft and vandalism
Passes all state and federal emissions tests
Manufactured from durable, long-life materials
Reduces air pollution with proper sealing and venting
Independently tested for emission control

Top Picks for 2004 Buick Regal Fuel Pumps

Upgrade Buick Regals with top-quality Fuel Pumps parts, including 10 OEM and aftermarket selections for your 2004 model.

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$332.99

100 years of OE experience, supplier to the world’s top automakers, OE Heritage and knowledge built into every aftermarket part, comprehensive portfolio for a wide range of vehicles and model years.

Product Features:

Delphi is a global OE manufacturer and all fuel pumps are built to Delphi’s OE standards
Empty float height and float retention matches OE specifications and guarantees correct gas gauge reading
Lower amperage draws less load on vehicle’s electrical system
Part is validated, tested and matched to the right vehicle application
Always be sure to check and clean fuel tank to avoid unnecessary returns
Lower failure rates due to its innovative design and durability

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$251.99

Product Features:

All CARQUEST fuel pumps are designed to meet or exceed OE specs and are 100% tested to ensure performance and long-life.
High-efficiency turbine technology provides quiet and precise fuel delivery
Carbon commutator technology provides improved durability and robust performance for gasoline and flexible fuel
CARQUEST fuel pump features external rubber feet for enhanced stability and reduced noise from vibration.
CARQUEST Fuel Pump has modified return porting to increase flow resulting in lower failure rates. Upgraded convoluted tubing improves durability to resist tube wear failure and create longer life.

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$127.99

Carquest Premium fuel pump modules and assemblies are engineered by Carter Fuel Systems or Agility Auto Parts to meet or exceed Original Equipment (OE) specifications for fit, form and function. We have invested in industry-leading quality improvements like upgraded turbine impellers and 100% carbon commutators to deliver greater reliability. Carquest Premium fuel pump modules are supplied with the pump strainer and gaskets or seals when required for the application. Carquest Premium fuel pump modules are engineered with superior quality components to provide the longest life and reliable performance.

Product Features:

Meets or exceeds OE specifications for fit, form and function
100% carbon commutators provide resistance to aggressive fuels and double the life expectancy of the pump
OE upgraded turbine impellers greatly reduce fuel pulsation
All fuel pumps are 100% performance tested
Includes installation gaskets or seals where applicable

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$115.99

Meets or exceeds OE specifications for fit, form and function
100% carbon commutators provide resistance to aggressive fuels and double the life expectancy of the pump
OE upgraded turbine impellers greatly reduce fuel pulsation
All fuel pumps are 100% performance tested
Includes installation gaskets or seals where applicable

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$105.99

Meets or exceeds OE specifications for fit, form and function
100% carbon commutators provide resistance to aggressive fuels and double the life expectancy of the pump
OE upgraded turbine impellers greatly reduce fuel pulsation
All fuel pumps are 100% performance tested
Includes installation gaskets or seals where applicable

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$329.99

Delphi is a global OE manufacturer and all fuel pumps are built to Delphi’s OE standards
Empty float height and float retention matches OE specifications and guarantees correct gas gauge reading
Lower amperage draws less load on vehicle’s electrical system
Part is validated, tested and matched to the right vehicle application
Always be sure to check and clean fuel tank to avoid unnecessary returns
Lower failure rates due to its innovative design and durability

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$368.55

Benchmark quality from the worldwide leader in fuel injection technology. Bosch state-of-the-art turbine fuel pumps offer many advantages when compared to older roller-cell and inner-gear pump designs. These pumps offer near silent operation and improved drivability, the core components of this turbine design significantly reduce wear and deliver a longer service life. Bosch Turbine Fuel Pumps are nearly identical in dimension and appearance to the units they replace for a precise fit every time. Plus, application-specific, illustrated step-by-step instructions are included with all Bosch Turbine Fuel Pumps for safe and easy installation. To prevent hot start problems, Bosch includes a non-return valve that maintains system pressure long after the vehicle has been shut off.

Product Features:

OE-Equivalent Direct fit for easy installation.
OE connections and fittings.
Superior turbine pump design that virtually eliminates fuel pulsation.
Precision, spin-balanced armature to reduce noise and vibration.
Premium carbon brushes, utilizing advanced materials.
Noise suppression coil that eliminates radio frequency interference.
Illustrated step-by-step instructions are included.

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$88.99

CARQUEST fuel pump modules offer OEM or better performance from an Original Equipment Supplier. The latest advancements in fuel delivery technology are built-in to every CARQUEST Fuel Pump to deliver greater reliability.

Product Features:

Every single pump is 100% tested throughout the entire manufacturing process for worry free, out-of-the-box performance
Triple barb hose fitting provides superior, long-lasting seal
Superior return porting for optimum fuel flow
Enhanced pump to flange harness design provides worry-free electrical performance
Ceramic sender card and float arm that utilizes vehicle-specific geometry to ensure accurate fuel gauge readings for each and every application
Gradient density, dual zone filtration designed for better contamination resistance

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$39.99

Fuel Cap Tester Adaper for use with Stant fuel cap testers. Color coded for easy identification. Made of durable plastic.

Product Features:

BAR Certified adapters
Adapter check’s a fuel cap’s ability to hold pressure.
Adapters meet EPA standards for recommended fleet coverage.
Check adapter application chart for specific makes and models

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$11.99

CARQUEST wiring harnesses are designed to replace worn, damaged, or corroded electrical connections, delivering reliable performance and long life.

Product Features:

Provides worry-free electrical performance
Designed to meet or exceed OE specifications

In-Demand Fuel Injectors for 2004 Buick Regals

Select from 32 premium Fuel Injectors parts for your 2004 Buick Regal, with prices ranging from $2.99 to $294.99.

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from

$163.99

Hitachis Air Flow Sensors (MAFs) measure the amount and characteristics of air entering the engine. Hitachi uses precision elements and high-quality components for enhanced durability and accurate air flow measurements. Hitachi MAFs are 100% air flow tested for ideal performance and are calibrated for each application ensuring your vehicle meets the strict emission standards set by the manufacturer. Details such as a contaminant bypass port (when applicable) and protected circuitry providing a durable and reliable product approved by OE manufacturers makes Hitachis air flow sensors the premium choice.

Product Features:

Hitachi is a Tier 1 OE supplier for air flow sensors
100% NEW, never remanufactured
Hitachi’s advanced precision elements and high quality components provide enhanced durability. We feature exact fitment and calibration for each vehicle, which assists engine efficiency and fuel mileage. Our sensors are 100% air flow tested to meet exac
Precision manufactured and assembled sensing elements for accurate air flow measurements

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$7.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Validated for fit, form, and function

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$179.99

100% new; Delphi OE Technology Validated to match the vehicle applications; Manufactured to meet or exceed OE requirements

Product Features:

Delphi mass air flow sensors are the global benchmark for accuracy and signal noise
Delphi mass air flow sensors feature high quality sensing elements for outstanding performance over a wide range of ambient temperatures
Delphi is a manufacturer of OE mass air flow sensors since their first use over 30 years ago
All parts are calibrated and tested to match the OE part
Probe solution offered wherever possible to reduce repair time by eliminating the need to replace the flow tube.
Delphi OE technology validated to match the vehicle applications

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$7.49

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered for the sealing repair environment
Unsurpassed quality you can trust
Validated for fit, form, and function

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$66.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
SEALING TECHNOLOGIES — Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
ENGINEERING EXPERTISE — Parts are designed, reviewed, validated and approved by Fel-Pro engineers through rigorous research and development
REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted

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$128.99

CARDONE Remanufactured Mass Air Flow Sensors (MAFS) precisely track O.E. output curves and maintain specific tolerances to ensure accurate scan tool readings for proper operation. 100% re-soldering of critical components ensures superior electrical co nnections, eliminates intermittent failures and lengthens product life. With CARDONE Mass Air Flow Sensors (MAFS), you can expect smooth vehicle performance.

Product Features:

100% re-solder of critical components ensures superior electrical connections, no intermittent failures and longer product life.
On-car vehicle validation routines ensure that modules meet all form, fit, durability and performance requirements.
All modules are 100% tested with automated computer test equipment to ensure full functionality and reliability.
Our sensors precisely track O.E. output curves and maintain spec tolerances to ensure accurate feedback to the vehicle¿s engine control management system.
Our sensors precisely track O.E. output curves and maintain spec tolerances to ensure accurate feedback to the vehicle┐s engine control management system.
Components are rated to handle demanding temperature variations for optimum reliability in every environment.
As a remanufactured Original Equipment part, this unit guarantees a perfect vehicle fit.
Our remanufacturing process is earth-friendly, as it reduces the energy and raw material needed to make a new part by 80%.

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$128.99

Advance Auto Parts is proud to carry all new mass air flow sensors that use high-quality components with the highest quality standards.

Product Features:

CARQUEST MAF use all new high-quality components at the highest quality standards.
Manufactured with new and advanced technology to perform, fit and function at OE specifications.
All new product that is tested with OEM equipment to OEM standards
Outperforms competition when tested in extreme environmental conditions

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$2.99

CARQUEST fuel injector seal kits include the necessary O-rings and seals to properly reseal the injector, which is a recommended practice any time the injector is removed. Each kit services one injector and includes hard to find or previously dealer-only components.

Product Features:

Premium OE quality materials
Services one injector

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$57.99

CARQUEST’S line of remanufactured OEM fuel injectors are remanufactured using a proven 15 step process at a state-of-the-art remanufacturing facility in the U.S.A. Each injector is 100% tested under multiple operating conditions to ensure each injector meets or exceeds OE specifications for flow rate, spray pattern, coil resistance, form, fit and function. Each injector includes new external seals and O-rings.

Product Features:

Each unit is 100% tested to OE specifications
Includes new O-rings and seals made of premium OE quality materials
Includes application specific technical bulletin, where applicable

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$76.99

High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:

Designed to OE standards for ease of installation
Application-specific to ensure the proper fit and form
Precision-engineered pressure regulators for proper fuel delivery and engine performance
As a global manufacturer, we have complete control of the manufacturing process, from components to finished product?

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$19.49

GM Genuine Parts Fuel Injector Seal Kits are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These seals help provide liquid-tight connections between the fuel injector and related components. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:

Helps provide a seal to prevent fuel leaks
Helps seal combustion chamber from the elements
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

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$8.99

High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:

Designed to OE standards for ease of installation
High-quality materials withstand extreme conditions
Undergoes extensive testing to ensure reliability
As a global manufacturer of automotive aftermarket products, we maintain complete quality control throughout the manufacturing process

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$6.29

Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

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$13.79

This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

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$88.99

Helps provide constant fuel pressure to the injectors
Assists in cold engine starts
Helps maintain stable engine idle
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$48.49

Each unit is 100% tested to OE specifications
Includes new O-rings and seals made of premium OE quality materials
Includes application specific technical bulletin, where applicable

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$294.99

GM Genuine Parts Mass Air Flow (MAF) Sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These sensors are key parts of the engine management system, and are GM-recommended replacements for your vehicle’s original components. The MAF sensor measures the amount of air entering the engine so that the engine control module can determine the amount of fuel to inject. This helps ensure the most efficient air/fuel mixture for the best fuel economy and power. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:

Measures the amount of air entering the engine so the ECM can determine the amount of fuel to inject
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

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$130.70

An ACDelco GM Original Equipment Fuel Injection Pressure Regulator is a GM-recommended replacement for your vehicle’s original component. The Fuel Injection Pressure Regulator is a mechanical valve that controls the fuel pressure in the fuel injector rail. The spring-loaded valve returns excess fuel back to the fuel tank. This original equipment fuel injection pressure regulator has been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:

Fully tested against leaks
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$84.99

100 years of OE experience, supplier to the world’s top automakers, OE Heritage and knowledge built into every aftermarket part.

Product Features:

Precisely manufactured internal valves, diaphragms and springs means excellent performance under all engine operating conditions
Quiet operation, no audible regulator noise
Robust diaphragm materials means longer life, improved durability and compatibility with a wide range of fuels
Consistent and predictable fuel pressure throughout system range of control provides great drivability

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$207.99

Hitachi manufactures a direct fit air mass sensor that guarantees OEM quality, fit and performance.

Product Features:

OEM Quality Direct fit Application
Platinum coated sensing element
Meets or exceeds OEM specifications
Utilizes the factory style mounts, connectors and fittings
Provides exceptional reliability

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$164.46

FUEL PRESSURE REGULA

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$160.66

For more than a century, Delphi has been making the parts cars are born with. Delphi is proud of its OE heritage, and over the years they have used that experience to expand into a global aftermarket supplier.

Product Features:

Robust diaphragm materials means longer life, improved durability and compatibility with a wide range of fuels
Precisely manufactured internal valves, diaphragms and springs means excellent performance under all engine operating conditions
Quiet operation
No audible regulator noise
Consistent and predictable fuel pressure throughout system range of control provides great drivability.

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$151.81

The ACDelco GM Original Equipment Fuel Injector is a GM-recommended replacement for your vehicle’s original component. The Fuel Injector is an electro-magnetic valve that meters fuel into the engine’s intake manifold or cylinders for combustion. The engine management computer operates the injector by applying an electric current to the injector solenoid winding – this causes the needle valve to open, and allows the pressurized fuel to be atomized into the intake airstream. This original equipment fuel injector has been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:

Atomize fuel into the engine’s intake manifold or cylinders, as part of the fuel and engine management system
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$108.24

Fuel Pressure Regula

from

$107.86

Fuel Pressure Regula

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$92.99

Bosch is a recognized OE leader in fuel systems technology, with more than 45 years of gasoline fuel injection experience. The fuel injection program provides vast coverage for Domestic, European, and Asian vehicles.

Product Features:

Guaranteed OE fit, form and function
Manufactured of the highest quality materials
Provides precision flow and original spray pattern for optimal performance
Product includes top and bottom mounting o-ring
Maintains new-car smoothness and drivability

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$87.99

100 years of OE experience, supplier to the world’s top automakers, OE Heritage and knowledge built into every aftermarket part.

Product Features:

Precisely manufactured internal valves, diaphragms and springs means excellent performance under all engine operating conditions
Quiet operation, no audible regulator noise
Robust diaphragm materials means longer life, improved durability and compatibility with a wide range of fuels
Consistent and predictable fuel pressure throughout system range of control provides great drivability

from

$75.99

WVE is a leading source of advanced vehicle electronics components for replacement applications in the automotive aftermarket and original equipment applications. WVE offers high-technology manufacturing along with innovative solutions and improvements to

from

$56.99

Protective outer coverings help provide long-lasting durability
Color-coded wires allow for easy installation
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$27.84

The ACDelco GM Original Equipment Fuel Injector O-Ring Kit is a GM-recommended replacement component that provides the same performance, durability, and service life as your factory original equipment.

Product Features:

GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$8.79

With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.

Product Features:

Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.

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$7.92

Fuel Injector O-Ring

Most Sold 2004 Buick Regal Oxygen Sensors

Explore our best-selling Buick parts for the 2004 Regal among 14 OEM and aftermarket options starting from $40.99.

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$74.99

DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled performance. Each component is precision built for exact replacement, and a first time fit. This innovative line features DENSO’s exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity. DENSO gives you the right part and the right fit, the first time.

Product Features:

Specifically designed to meet the increasing demands of today’s engines
100% checked for high temperature signal output, air tightness, continuity, and heat resistance for optimal efficiency and performance
Coated with aluminum oxide to prevent silicone and lead from contacting the ceramic element and damaging the platinum electrode
Double protection cover helps maintain proper unit temperature for quicker response times, which is critical to your vehicle’s fuel efficiency
Manufactured with a rugged stainless steel housing and porous PTFE filter to resist corrosion and contamination

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$77.99

Specifically designed to meet the increasing demands of today’s engines
100% checked for high temperature signal output, air tightness, continuity, and heat resistance for optimal efficiency and performance
Coated with aluminum oxide to prevent silicone and lead from contacting the ceramic element and damaging the platinum electrode
Double protection cover helps maintain proper unit temperature for quicker response times, which is critical to your vehicle’s fuel efficiency
Manufactured with a rugged stainless steel housing and porous PTFE filter to resist corrosion and contamination

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$69.99

Bosch is the world’s leading supplier and original equipment manufacturer of Oxygen Sensors. Bosch invented the automotive oxygen sensor and leads the way in sensor technology and innovation. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.

Product Features:

Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
Includes Smart Link Connector, no soldering required
No special tools required for installation
Seared protection tube due to 100% functional quality test
Performance meets or exceeds OE specifications

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$77.99

Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
Direct Fit includes OE Connector for easy installation
Performance meets or exceeds OE specifications
True Direct-fit OE connectors and harness

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$81.99

Specifically designed to meet the increasing demands of today’s engines
100% checked for high temperature signal output, air tightness, continuity, and heat resistance for optimal efficiency and performance
Coated with aluminum oxide to prevent silicone and lead from contacting the ceramic element and damaging the platinum electrode
Double protection cover helps maintain proper unit temperature for quicker response times, which is critical to your vehicle’s fuel efficiency
Manufactured with a rugged stainless steel housing and porous PTFE filter to resist corrosion and contamination

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$89.99

GM Genuine Parts Oxygen (O2) Sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These sensors are special feedback sensors on your vehicle’s exhaust system and measure the proportion of oxygen in exhaust gases. Using this measurement, the engine control module (ECM) can adjust the air/fuel ratio to near the optimal value of 14.7:1. At this ratio, engine performance, emissions, and fuel economy are all optimized. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:

This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle
Detects oxygen content in the exhaust gases to help optimize emissions
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

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$79.99

This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle
Detects oxygen content in the exhaust gases to help optimize emissions
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

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$67.99

Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
Direct Fit includes OE Connector for easy installation
Performance meets or exceeds OE specifications
True Direct-fit OE connectors and harness

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$40.99

Premium quality materials for longer service life
Sealed connections (where applicable) to prevent environmental corrosion and performance issues
Global coverage for import and/or domestic applications
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

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$74.24

Denso First Time Fit oxygen sensors are constructed of the highest quality materials available. High-quality stainless steel, porous polytetrafluoroethylene (PTFE), fluorine rubber, aluminum oxide, high-grade platinum and ceramics are used in each DENSO sensor.

Product Features:

SUPERIOR DESIGN – Maximizes engine performance and fuel efficiency while reducing harmful emissions.
DOUBLE-PROTECTION COVER – Maintains proper unit temperature for quicker response times and protects the ceramic element against silicone and lead poisoning.
ALUMINUM-OXIDE TRAP LAYER – Keeps silicone and lead outside the ceramic element through DENSO’s exclusive design, preventing damage to the platinum electrode.
STAINLESS STEEL HOUSING – Resists corrosion and contamination with a rugged, watertight body.

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$79.82

SUPERIOR DESIGN – Maximizes engine performance and fuel efficiency while reducing harmful emissions.
DOUBLE-PROTECTION COVER – Maintains proper unit temperature for quicker response times and protects the ceramic element against silicone and lead poisoning.
ALUMINUM-OXIDE TRAP LAYER – Keeps silicone and lead outside the ceramic element through DENSO’s exclusive design, preventing damage to the platinum electrode.
STAINLESS STEEL HOUSING – Resists corrosion and contamination with a rugged, watertight body.

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$53.99

Premium quality materials for longer service life
Sealed connections (where applicable) to prevent environmental corrosion and performance issues
Global coverage for import and/or domestic applications
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

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$95.22

The ACDelco GM Original Equipment Oxygen (O2) Sensor is a GM-recommended replacement for your vehicle’s original component. The Oxygen (O2) Sensor is a special feedback sensor on your vehicle’s exhaust system. This sensor measures the proportion of oxygen in the exhaust gases. Using this measurement, the engine management computer can adjust the air/fuel ratio near the optimum value of 14.7:1. At this ratio, engine performance, emissions, and fuel economy are all optimized. This original equipment oxygen sensor has been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors. When you are looking for a match to GM Original Equipment specifications in a replacement part for your GM vehicle, trust ACDelco to get the job done.

Product Features:

Detect oxygen content in the exhaust gases to optimize emissions and fuel economy
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$75.99

OEM QUALITY: NTK is the world’s largest supplier of original equipment oxygen sensors with renowned quality that meets or exceeds OEM specifications
PRODUCT ENGINEERING: Based on OE expertise, but specifically engineered for the aftermarket, NTK Oxygen Sensors offer superior OE fit, form, function
OE TECHNOLOGY: Upgraded to the latest OE technologies, NTK Oxygen Sensors are designed to reduce OE failures, enhance durability and performance
EXTENSIVE TESTING: OE development includes vibration and thermal shock testing. Testing during manufacturing guarantees quality and reliability
EASY INSTALLATION: NTK Oxygen Sensors are equipped with OE specified, water-resistant connectors and harness accessory hardware for easy installation
ADVANCED CERAMIC SENSOR ELEMENT: 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects against element poisoning
NTK ADVANTAGE: Superior dual-coated platinum interface and thinner ceramic element produces fastest light off and response times with best durability

Top-Rated Fuel and Emissions Systems Brands For Your 2004 Buick Regal

Shop for the best-rated brands offering Fuel and Emissions Systems and other products for your 2004 Buick Regals. Below you’ll find some of our best rated Fuel and Emissions Systems from FELPRO, DENSO, and Carquest Premium, and more. Fuel and Emissions Systems from these brands that fit a 2004 Regal start at just $2.49 and are rated as high as 5 stars. OEM and aftermarket Fuel and Emissions Systems don’t get more top quality, durable, and affordable than from the brands below.

Popular FELPRO 2004 Buick Regal Fuel and Emissions Systems

When it comes to maintaining or upgrading your 2004 Buick Regal, using quality Fuel and Emissions Systems is essential to ensure durability and a perfect fit. FELPRO ticks all of those boxes. We offer a wide selection of FELPRO Fuel and Emissions Systems, specifically designed for the 2004 Buick Regal. With over 5 FELPRO brand Fuel and Emissions Systems in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $3.49, with an average price of just $18.78. Plus, with over 140 customer reviews and an average rating of 5 stars, you can trust that our FELPRO Fuel and Emissions Systems will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

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$7.99

(5)

Fuel Injection Throttle Body Mounting Gasket

“Arrived on time and in good shape!”

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$3.49

(4)

EGR/EXHAUST AIR SUPPLY GASKET

“Fits perfect”

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$7.92

This product is not rated

Fuel Injector O-Ring

“”

Popular DENSO 2004 Buick Regal Fuel and Emissions Systems

DENSO auto parts is one of the highest quality Fuel and Emissions System brands in the market. Any 2004 Buick Regal owner should feel confident when installing genuine DENSO parts in their vehicle. To ensure the best fit and performance for your 2004 Regal, Advance Auto Parts carries a full inventory of 5 DENSO Fuel and Emissions Systems. Plus you will be keeping your Buick in peak condition while saving money because prices on these DENSO Fuel and Emissions Systems range from $74.24 to $81.99, plus, with more than 688 customer reviews and an impressive 5 stars average rating, you can be confident the Fram Fuel and Emissions Systems below will deliver on both quality and value.

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$79.82

This product is not rated

First Time Fit Oxygen Sensor

“”

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$74.99

(332)

Oxygen Sensor: 4 Wire, 12.99" Long, Heated, Exact Fit

“Perfect fit”

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$74.24

This product is not rated

First Time Fit Oxygen Sensor

“”

FAQs for 2004 Buick Regal Fuel and Emissions Systems

Which Fuel and Emissions Systems are best-sellers for 2004 Buick Regals?

Out of 133 Fuel and Emissions Systems that fit 2004 Buick Regals, the following parts are the top sellers:

Fuel Injector O-Ring Kit (3504360) – $7.49
Fuel Cap: 10836, Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (18481527) – $17.79
MAP Sensor (10703810) – $67.05

What’s the price range for 2004 Buick Regal Fuel and Emissions Systems?

Fuel and Emissions System prices for the 2004 Buick Regal start at $2.49 and go up to $370.38 for the most premium parts.

What’s the average price of a Fuel and Emissions System for a 2004 Buick Regal?

The average price for Fuel and Emissions Systems for the 2004 Buick Regal is $73.17. Keep in mind the variety of part types within our Fuel and Emissions System category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Fuel and Emissions Systems for other Buick Regal model years?

Yes, we currently carry Fuel and Emissions Systems for 38 model years of Buick Regals between 1973 and 2017. Fuel and Emissions Systems are bought most frequently for the following model years: 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2003, and 2002.

What are the cheapest Fuel and Emissions Systems for my 2004 Buick Regal?

The cheapest 2004 Buick Regal Fuel and Emissions Systems we carry in stock are:

Exhaust Gas Recirculation (EGR) Valve Gasket (12521989) – $2.49
Fuel Injector Seal Kit (11450036) – $2.99
EGR/EXHAUST AIR SUPPLY GASKET (15780614) – $3.49
SPLASH SHLD COWL RET (50231732) – $4.99
Mahle EGR Valve Gasket (11647991) – $5.09

What are the top-rated Fuel and Emissions Systems that fit the 2004 Buick Regal?

Out of 2,197 reviews by customers, our 2004 Buick Regal Fuel and Emissions Systems have an average customer rating of . These are some of the highest-rated Fuel and Emissions System types for the 2004 Buick Regal and their top-rated products:

Air Flow Sensors
- MAP Sensor (10703810) – $67.05
- Air Charge Temperature Sensor (25987678) – $20.49
- Manifold Absolute Pressure (MAP) Sensor (15730347) – $89.99
Idle Air Control Parts
- MAP Sensor (10703810) – $67.05
- Air Charge Temperature Sensor (25987678) – $20.49
- Manifold Absolute Pressure (MAP) Sensor (15730347) – $89.99

What types of Fuel and Emissions Systems do you sell for my 2004 Buick Regal?

As of 2/5/25, these are some of the most in-demand types of Fuel and Emissions Systems for a 2004 Buick Regal:

Can I get help with 2004 Buick Regal Fuel and Emissions System orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Buick Fuel and Emissions Systems and more.

What is your return policy for Buick Regal Fuel and Emissions Systems?

Advance Auto Parts keeps returns simple. For new Buick Regal Fuel and Emissions Systems and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

2004 Buick Regal Fuel and Emissions Systems

ACDelco – Black Multi-Purpose Pigtail (Part No.PT2183)

Delphi – Fuel Tank Cleaning Kit (Part No.FC01)

Carquest Premium – Vapor Canister Vent Solenoid (Part No.CPA1013)

Carquest – Idle Air Control Valve (Part No.76A1005)

ACDelco – Fuel Injection Pressure Regulator Kit with Clip and Snap Ring (Part No.217-3072)

NTK – Switching Oxygen Sensor: 4 Wire, 13.75" Long, Heated, Direct Fit (Part No.21006)

Dorman – Fuel Pump Lock Ring (Part No.579-091)

Carquest Premium – Fuel Cap Tester Adapter (Part No.12410)

Carquest Premium – Exhaust Gas Recirculation (EGR) Tube (Part No.EGC1256)

ACDelco – 5-Way Female Gray Multi-Purpose Pigtail (Part No.PT1154)

Spectra Premium – Fuel Filler Neck (Part No.FN719)

Carquest Premium – Connector (Part No.PTA1252)

Dorman – Fuel Line Connectors, Retainers & Repair Kits (Part No.800-123.5)

GM Genuine Parts – Fuel Injector Retainer Kit with Clip (Part No.12570620)

ACDelco – 6-Way Female Black Multi-Purpose Pigtail (Part No.PT246)

Carquest Premium – Multi Purpose Relay (Part No.RAA1237)

GM Genuine Parts – Fuel Pressure Relief Valve Cap (Part No.214-1044)

Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17591D)

ACDelco – 5-Way Female Black Multi-Purpose Pigtail (Part No.PT1332)

Carquest Premium – Fuel Level Sensor (Part No.KBC1004)

Dorman – Vapor Canister Vent (Part No.B7091829269DOR)

Accel – Perf Fuel Injectors 19Lb 6-Pak (Part No.150619)

Delphi – EGR Valve (Part No.EG10022)

ACDelco – GM Original Equipment Fuel Sender Seal (Part No.E2050295147ACD)

Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA1145)

ACDelco – Fuel Line Clip (Part No.E5015751098ACD)

Carquest Premium – Oxygen Sensor Connector (Part No.PTA1517)

ACDelco – Mass Air Flow Sensor (Part No.213-3419)

Driveworks – MAP Sensor (Part No.31424)

ACDelco – Manifold Absolute Pressure (MAP) Sensor (Part No.213-796)

Delphi – Air Charge Temperature Sensor (Part No.TS10072)

Carquest Premium – Manifold Absolute Pressure Sensor (MAP) (Part No.ECC1011)

NTK – Multi-Purpose Temperature Sensor (Part No.EF0008)

NTK – Manifold Absolute Pressure Sensor (Part No.MA0097)

ACDelco – Air Cleaner Temperature Sensor (Part No.213-243)

Carquest – Air Charge Temperature Sensor Connector (Part No.PT187)

NTK – Air Charge Temperature Sensor (Part No.AJ0003)

FAE – Engine Coolant Temperature Sensor (Part No.C6020175714FAE)

ACDelco – Water Temp. Sensor (Part No.C6020581131ACD)

Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA1145)

ACDelco – Ambient Air Outside Temperature Sensor (Part No.10248414)

Delphi – Air Temperature Sensor (Part No.C6000175619DEL)

GM Genuine Parts – Manifold Absolute Pressure Sensor (Part No.19418808)

ACDelco – Manifold Absolute Pressure (MAP) Sensor (Part No.213-4434)

Carquest Premium – Manifold Absolute Pressure Sensor (MAP) (Part No.ECC1175)

GM Genuine Parts – Barometric Pressure Sensor (Part No.19418810)

Delphi – Manifold Absolute Pressure Sensor (Part No.PS10082)

ACDelco – GM Original Equipment Engine Coolant Temperature Sensor (Part No.C6020206740ACD)

ACDelco – Engine Coolant Temperature Sensor (Part No.213-4396)

ACDelco – Ambient Temp Sensor (Part No.P4025360706ACD)

GM Genuine Parts – Manifold Absolute Pressure Sensor Seal (Part No.16194007)

Dorman – SPLASH SHLD COWL RET (Part No.963-230D)

Carquest Premium – Fuel Cap: 10836, Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10836)

Carquest Premium – Locking Fuel Cap: 10506, Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10506)

Carquest Premium – Locking Fuel Cap: 10522, Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10522)

Motorad – Tethered Fuel Cap (Part No.MGC834T)

Carquest Premium – Locking Fuel Cap (Part No.10517)

Delphi – Fuel Pump Module Assembly: With Float Arm, Seal, Splice Kit (Part No.FG0342)

Carquest Premium – Fuel Pump Module Assembly (Part No.E3542M)

Carquest Premium – Fuel Pump Module Assembly: Fuel Pump, Sending Unit and Strainer (Part No.M2246742)

Carquest Premium – Fuel Pump Module Assembly: Fuel Pump, Sending Unit and Strainer (Part No.M2510463)

Carquest Premium – Fuel Pump Module Assembly: Fuel Pump, Sending Unit, Wiring Harness and Strainer (Part No.M3520850)

Delphi – Fuel Pump Module Assembly: With Float Arm, Seal, Splice Kit (Part No.FG0260)

Bosch – Fuel Pump Assembly (Part No.E3001925862BOS)

Spectra Premium – Module Assembly; Includes Pump, Sender, Float, Strainer and Reservoir (Part No.SP6177M)

Carquest Premium – Fuel Cap Tester Adapter (Part No.12422)

Carquest Premium – Wiring Harness (Part No.WH3001)

Hitachi – Air Flow Sensor – New Actual OE Part (Part No.MAF0047)

Felpro – Fuel Injection Throttle Body Mounting Gasket (Part No.61093)

Delphi – Mass Air Flow Sensor (Part No.AF10126)

Felpro – Fuel Injector O-Ring Kit (Part No.ES 70599)

Felpro – UPPER INTAKE MANIFOLD GASKET/ PLENUM GASKET (Part No.MS 95812)

Cardone – Remanufactured Mass Air Flow Sensor (Part No.74-50015)

Carquest Premium – Mass Air Flow Sensor (MAF) – 100% NEW (Part No.MQ6205)

Carquest Premium – Fuel Injector Seal Kit (Part No.AS017)

Carquest Premium – Remanufactured Fuel Injector (Part No.A211-1623)

Carquest – Fuel Injection Pressure Regulator (Part No.22855)

GM Genuine Parts – Multi-Port Fuel Injector O-Ring Kit with 16 O-Rings (Part No.217-1427)

Carquest – Fuel Injector Seal Kit (Part No.274838)