2003 Cadillac CTS Fuel and Emissions Systems

Essential 2003 Cadillac CTS Fuel and Emissions Systems

ACDelco – Multi-Purpose Wire Connector with Leads (Part No.PT2164)

Multi-Purpose Wire Connector with Leads

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$16.79
ACDelco Professional Air Charge Temperature Sensor Connector is a high quality aftermarket replacement component for one or more of the following vehicle systems: ignition, starting and charging, body-electrical and lighting, and/or engine fuel management. This premium aftermarket connector 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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Carquest Premium – Fuel Injector Seal Kit (Part No.AS052)

Fuel Injector Seal Kit

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$6.49
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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Carquest Premium – Ambient Air Temperature Sensor (Part No.WTC1157)

Ambient Air Temperature Sensor

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$30.99
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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Delphi – Fuel Pump Module Assembly: With Float Arm (Part No.FG1301)

Fuel Pump Module Assembly: With Float Arm

from

$346.99
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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GM Genuine Parts – Fuel Injector O-Ring Kit with Assorted O-Rings (Part No.217-1624)

Fuel Injector O-Ring Kit with Assorted O-Rings

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$42.49
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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ACDelco – Direct Fuel Injector Assembly (Part No.217-3449)

Direct Fuel Injector Assembly

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$127.99
ACDelco GM Original Equipment Fuel Injectors are electro-magnetic valves that meter fuel into the engine’s intake manifold or cylinders for combustion, and are GM-recommended replacements for your vehicle’s original components. The engine control module (ECM) operates the injector by applying an electric current to the injector solenoid winding, causing the needle valve to open, and allowing pressurized fuel to be atomized into the intake airstream. These original equipment fuel injectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Atomizes fuel into the engine’s intake manifold or cylinders, as part of the fuel and engine management system
  • Allows for a quick throttle response
  • Assists in cold engine starts
  • 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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Carquest – Air Charge Temperature Sensor Connector (Part No.PT5901)

Air Charge Temperature Sensor Connector

from

$78.99
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 knock sensors are designed to respond to knock frequencies up to 1000 Hz accommodating shifts in engine knock frequency making it a more flexible sensor responding to correct engine knock over a broad range of vehicle conditions
  • Manufacturing processes include an automated data acquisition system to continuously monitor the sensor output to ensure that it responds with appropriate voltage output at the specified frequency range
  • All units are 100% tested using an accelerometer vibration test to ensure trouble-free operation
  • Featuring the broadest sensor coverage in the market, we meet the service professionals needs with the highest quality product every time he opens the box
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Dorman – Body Bolt – M6-1.0 X 25mm (Part No.963-232D)

Body Bolt - M6-1.0 X 25mm

from

$4.49
These bolts are manufactured using durable materials and corrosion-tested to ensure required strength and longevity.

Product Features:
  • Durable materials – manufactured to specific thread tolerance standards
  • Corrosion tested – hardware undergoes salt spray testing to ensure corrosion resistance
  • Multipurpose usefulness – can be used in a variety of applications, from auto to home
  • Trustworthy quality – backed by team of professional engineers and quality control specialists in the United States
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Carquest Premium – Tethered Locking Fuel Cap: 10509, Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10509)

Tethered Locking Fuel Cap: 10509, Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack

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$30.49
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:
  • 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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ACDelco – Vapor Canister Purge Valve (Part No.12690512)

Vapor Canister Purge Valve

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$58.99
ACDelco GM Original Equipment Vapor Canister Purge Valves are GM-recommended replacements for your vehicle’s original components. The purge valve controls the flow of fuel vapor from the vapor canister to the intake manifold. These original equipment vapor canister purge valves have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Controls vapor flow from canister to engine
  • 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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Carquest Premium – Vapor Canister Purge Solenoid (Part No.CPC1018)

Vapor Canister Purge Solenoid

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$46.99
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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NTK – Fuel Tank Pressure Sensor (Part No.FG0012)

Fuel Tank Pressure Sensor

from

$51.99
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:
  • Fuel Tank Pressure Sensors are manufactured to operational performance standards to meet or exceed OE fit, form and function to ensure proper pressure within the fuel tank and help detect leaks.
  • The Fuel Tank Pressure Sensor reports the ambient pressure in the fuel tank and evaporative emission system so that the PCM may detect evaporative system leaks.
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ACDelco – GM Original Equipment Fuel Tank Sending Unit (Part No.E2030351005ACD)

GM Original Equipment Fuel Tank Sending Unit

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$146.05
The ACDelco GM Original Equipment Fuel Tank Sending Unit is a GM-recommended replacement for your vehicle’s original component. The Fuel Tank Sending Unit consists of a float connected to a thin, metal rod that is mounted to a resistor. Together, these components sense fluid level changes, which are reflected on the vehicle’s fuel gauge. This original equipment sending unit has been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Designed with thick wiper contacts and wear pads that provide durability, especially with today’s ethanol fuels
  • Design helps eliminate complications due to worn fingers on the sensor wiper arm, sulfur contamination, and failures of wire wound sensors and/or lead sensor kits
  • GM-recommended replacement part for your GM vehicle’s original factory fuel tank sending unit
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
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ACDelco – 4-Way Male Gray Multi-Purpose Pigtail (Part No.PT1366)

4-Way Male Gray Multi-Purpose Pigtail

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$72.99
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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Carquest – Multi Purpose Relay (Part No.83A1003)

Multi Purpose Relay

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$20.49
High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:
  • High-quality products that meet OE appearance and performance to
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Carquest Premium – Mass Air Flow Sensor (MAF) – 100% NEW (Part No.MQ6214)

Mass Air Flow Sensor (MAF) - 100% NEW

from

$68.99
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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ACDelco – Vapor Canister Solenoid (Part No.84802774)

Vapor Canister Solenoid

from

$54.99
ACDelco GM Original Equipment Vapor Canister Vent Solenoids are GM-recommended replacements for your vehicle’s original components. These solenoids communicate with the valve to open and close, allowing air to pass in and out of the vapor canister vent. These original equipment vapor canister vent solenoids have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Controls fresh air flow to the canister
  • Sends fuel vapors to the engine for re-burn
  • Helps control fuel tank pressure
  • 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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ACDelco – Vapor Canister Vent Valve (Part No.22865590)

Vapor Canister Vent Valve

from

$39.99
ACDelco GM Original Equipment Vapor Canister Vent Solenoids are GM-recommended replacements for your vehicle’s original components. These solenoids communicate with the valve to open and close, allowing air to pass in and out of the vapor canister vent. These original equipment vapor canister vent solenoids have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Controls fresh air flow to the canister
  • Sends fuel vapors to the engine for re-burn
  • Helps control fuel tank pressure
  • 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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Bosch – Fuel Pressure Sensor (Part No.C3001744120BOS)

Fuel Pressure Sensor

from

$54.86
Fuel Pressure Sensor

Bosch – Oxygen Sensor: 4 Wire, 9.76" Long, Heated, Exact Fit (Part No.16746)

Oxygen Sensor: 4 Wire, 9.76" Long, Heated, Exact Fit

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$59.99
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 advancements. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.  Bosch oxygen sensors deliver exceptional OE level reliability, performance and durability, further improving service life of the product. 

Product Features:
  • 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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GM Genuine Parts – Secondary Air Inlet Valve Actuating Vacuum Tank (Part No.90502721)

Secondary Air Inlet Valve Actuating Vacuum Tank

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$76.99
GM Genuine Parts Vacuum Tanks 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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Elring – Fuel Injector Seal (Part No.C1010681908ELR)

Fuel Injector Seal

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$2.43
Fuel Injector Seal

Delphi – Wide Range Oxygen Sensor (Part No.C50101229916DEL)

Wide Range Oxygen Sensor

from

$91.33
The Delphi Wide Range Oxygen Sensor is an integral component in the engine management system, helping provide accurate engine control and system diagnostics. It measures the air-fuel ratio of exhaust gases over a wide lambda range. Its five-wire, two-cell design enables higher signal resolution with greater accuracy. An integrated heater and alumina-zirconia element facilitate a fast light-off, allowing earlier closed-loop operation compared to conventional conical oxygen sensors. Designed to accommodate a variety of fuel applications, the poison-resistant coating of the Delphi Wide Range Oxygen Sensor helps improve accuracy and durability in harsh exhaust environments, while minimizing deterioration of the sensor characteristics over time. Its uniquely designed planar element technology and integral heater enhance resistance to thermal shock and help the sensor achieve fast light-off to help manufacturers meet current and more stringent future emissions regulations. The sensor’s greater accuracy and a fast transient response time help provide greater engine control, and help improve fuel economy and drivability.

Product Features:
  • High signal resolution and low pressure sensitivity help provide precise engine control
  • Integral heater enables faster light-off for earlier closed-loop operation
  • Unique planar element design enhances thermal shock resistance
  • Fast response helps improve fuel economy
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Carquest Premium – Engine Camshaft Position Sensor Connector (Part No.PTA1226)

Engine Camshaft Position Sensor Connector

from

$40.99
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.

Product Features:
  • 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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Carquest Premium – Fuel Cap Tester Adapter (Part No.12427)

Fuel Cap Tester Adapter

from

$34.99
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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Delphi – Fuel Injection Pressure Regulator (Part No.FP10379)

Fuel Injection Pressure Regulator

from

$35.49
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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Felpro – Fuel Injection Throttle Body Mounting Gasket (Part No.61699)

Fuel Injection Throttle Body Mounting Gasket

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$9.79
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:
  • Each gasket set is built to meet or exceed 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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ACDelco – Fuel Level Sensor Kit with Seal (Part No.SK1329)

Fuel Level Sensor Kit with Seal

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$154.99
ACDelco GM Original Equipment Fuel Level Sensors are GM-recommended replacements for your vehicle’s original components. These sensors measure fuel level changes in your vehicle’s fuel tank, which are displayed on the vehicle’s fuel gauge. These original equipment sensors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Measures fuel level changes displayed on fuel gauge
  • 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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2003 Cadillac CTS Fuel and Emissions Systems

You count on your 2003 Cadillac CTS to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Fuel and Emissions Systems. With 58 Fuel and Emissions Systems ranging in price from $2.43 to $785.47, you’re sure to find everything you need for your 2003 Cadillac CTS.

Brands matter. If you want to shop a specific Fuel and Emissions Systems brand, we stock 14 different brands like Bosch, Carquest Premium, and Dorman. 2003 Cadillac CTS Fuel and Emissions Systems start as low as $2.43!

One of the best ways to find top quality OEM or aftermarket Fuel and Emissions Systems is by asking professionals. Short of that, you can shop with confidence thanks to our 656 extensive product reviews on 2003 Cadillac CTS Fuel and Emissions Systems. Some of the top-rated Fuel and Emissions Systems products we carry are Mass Air Flow Sensor (MAF) – 100% NEW with 1.0 stars.

Did we mention you can order your Fuel and Emissions Systems from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Fuel and Emissions Systems inventory for your 2003 Cadillac CTS below to get started!

Top-Rated Fuel and Emissions Systems Brands For Your 2003 Cadillac CTS

Trusted Fuel and Emissions Systems OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 2003 Cadillac CTS running right for years to come. In our inventory you’ll find brands like Bosch, Carquest Premium, Dorman, and even more.

Popular Carquest Fuel and Emissions Systems

You’ll find popular Carquest brand products across Fuel Injectors. All are waiting to get your 2003 Cadillac CTS back on the road. Some of the top-rated Carquest products in these categories are:
Fuel Injector
from $44.05
(3)
Fuel Injector
Fuel Injectors

Top-Rated Carquest Premium Fuel and Emissions Systems


If Carquest Premium are what you’re looking for, our inventory holds plenty. We stock Carquest Premium brand Fuel and Emissions Systems for your 2003 Cadillac CTS, and some of our most reviewed Carquest Premium parts include:

FAQs for 2003 Cadillac CTS Fuel and Emissions Systems

What are the most purchased Fuel and Emissions Systems for the 2003 Cadillac CTS?

Out of 58 Fuel and Emissions Systems for the 2003 Cadillac CTS, the most popular in our inventory are:
Body Bolt - M6-1.0 X 25mm
from $4.49
This product is not rated
Body Bolt – M6-1.0 X 25mm
Secondary Air Injection Pump Bolts
Fuel Tank Cleaning Kit
from $12.49
This product is not rated
Fuel Tank Cleaning Kit
Fuel Tank Cleaning Kits

What are the top-rated 2003 Cadillac CTS Fuel and Emissions Systems?

Top-rated Fuel and Emissions Systems for your 2003 Cadillac CTS based on customer reviews/ratings are:
Mass Air Flow Sensor (MAF) - 100% NEW
from $99.99
(1)
Mass Air Flow Sensor (MAF) – 100% NEW
“Does not fit non electronic gas pedal”