2004 Audi A8 Quattro Fuel and Emissions Systems

Essential 2004 Audi A8 Quattro Fuel and Emissions Systems

Carquest Premium – Fuel Cap Tester Adapter (Part No.12427)

Fuel Cap Tester Adapter

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$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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Elring – Elring EGR Valve Gasket (Part No.B7100180816ELR)

Elring EGR Valve Gasket

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$5.90
The Elring EGR Valve Gasket is a high quality Original Equipment replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:
  • Premium Original Equipment replacement
  • Provides performance and dependability
  • Manufactured to meet OE specifications
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APA/URO Parts – Suction Pump (Part No.B2045325720APA)

Suction Pump

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$42.02
The APA/URO PCV Suction Pump 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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Carquest Premium – Fuel Cap: 10835, Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10835)

Fuel Cap: 10835, Screw On, Direct Fit, Provides Tight Seal, 1 Pack

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$12.99
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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Bosch – Fuel Injector Seal Kit (Part No.C106016844BOS)

Fuel Injector Seal Kit

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$10.68
Bosch is one of the largest global suppliers of automotive products, developing, manufacturing and supplying precision OE components and systems to vehicle manufacturers and the automotive aftermarket. This 5-piece kit contains 3 O-rings (black), 1 support ring (gray), and 1 protective cap (yellow). Use one kit per injector.
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Carquest Premium – Engine Camshaft Position Sensor Interrupter (Part No.CSA2444)

Engine Camshaft Position Sensor Interrupter

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$14.49
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:
  • Designed to meet or exceed OE specifications in form, fit and function
  • Global coverage for import and/or domestic applications
  • Premium quality materials for longer service life
  • Precise design tolerances for greater reliability and OE levels of performance
  • Life-cycle tested to meet or exceed OE specifications
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Elring – Fuel Injector O-Ring (Part No.C101262400ELR)

Fuel Injector O-Ring

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$1.07
Fuel Injector O-Ring

NTK – Wideband Oxygen Sensor: Air-Fuel Ratio 5 Wire, 27.5" Long, Heated, Direct Fit (Part No.27055)

Wideband Oxygen Sensor: Air-Fuel Ratio 5 Wire, 27.5" Long, Heated, Direct Fit

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$144.99
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. While conventional switching oxygen sensors only switch rich or lean, wideband oxygen (or Air-Fuel Ratio) sensors produce a linear output signal that allows the ECU determine exactly how rich or lean an engine is running and make continuous and precise adjustments of the air-fuel mixture to stay closest to stoichiometric, providing the best possible combustion and fewest emissions. A ceramics company at our core, NTK uses state-of-the art technology enabling complete control of the ceramics used in our wideband 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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Elring – EGR Adapter Gasket (Part No.B7102387165ELR)

EGR Adapter Gasket

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$3.34
EGR Adapter Gasket

Vaico – Vaico Breather Hose (Part No.B2010265917VCO)

Vaico Breather Hose

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$139.02
The Vaico Breather Hose 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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Kayser – Vacuum Check Valve (Part No.O404032232KAY)

Vacuum Check Valve

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$23.71
Vacuum Check Valve

Bosch – Oxygen Sensor: 4 Wire, 28.74" Long, Heated, Exact Fit (Part No.16136)

Oxygen Sensor: 4 Wire, 28.74" Long, Heated, Exact Fit

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$105.99
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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Dorman – Evaporative Emissions Purge Solenoid Valve (Part No.911-800)

Evaporative Emissions Purge Solenoid Valve

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$52.99
Engineered for a perfect fit and plug-and-play installation, this vapor canister purge valve is a direct replacement for the original equipment purge valve. It is critical to the evaporative emissions system and fulfills government requirements.

Product Features:
  • Direct replacement – this vapor canister purge valve fits and functions like original equipment to ensure proper function of your vehicle’s evaporative emissions system
  • Quality construction – manufactured from premium materials for a long service life
  • Excellent value – original equipment quality at a lower price
  • Quality tested – has undergone testing to ensure proper fit and performance
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Delphi – Fuel Tank Cleaning Kit (Part No.FC01)

Fuel Tank Cleaning Kit

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$12.49
To perform a complete fuel pump replacement, clean the tank every time. Order the Delphi Fuel Tank Cleaning Kit (Part FC01). Remember, the original pump went into a clean fuel tank, to ensure the same level of performance, the new pump should too. 100 ye

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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Dorman – 30 AMP 12 Volt 4 Pin Universal Relay (Part No.84601)

30 AMP 12 Volt 4 Pin Universal Relay

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$9.99
This relay connector is designed to match the appearance and function of the original hardware on specified applications. Made of quality materials, it is engineered for reliable performance and durability.

Product Features:
  • Direct replacement – this relay connector matches the appearance and function of the factory hardware on specified applications
  • Ideal solution – this connector is a reliable replacement for an original part that is missing or has failed due to fatigue
  • 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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Carquest Premium – Evaporative Emissions System Leak Detection Pump (Part No.VDC1003)

Evaporative Emissions System Leak Detection Pump

from

$191.99
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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Dorman – Secondary Air Injection Pump (Part No.306-029)

Secondary Air Injection Pump

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$597.99
This secondary air injection pump is designed to match the fit and function of the original pump on specified applications. Made of quality materials, it is engineered for reliable performance and durability.

Product Features:
  • Direct replacement – this secondary air injection pump is designed to match the fit and function of the original pump on specified applications
  • Restores functionality – reliable replacement for an original part that is leaking or has failed due to internal component failure
  • 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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Wells Vehicle Electronics – Fuel Injection Pressure Regulator (Part No.5G1568)

Fuel Injection Pressure Regulator

from

$52.99
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
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Bosch – Bosch Fuel Pressure Regulator (Part No.C300056477BOS)

Bosch Fuel Pressure Regulator

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$51.73
An essential part of the Fuel System, the Fuel Pressure Regulators’ sole purpose is to maintain fuel pressure at a constant differential to manifold vacuum under all engine load conditions.

Product Features:
  • Corrosion resistant housing material
  • Premium diaphragm materials for longer service life
  • Internal precision components maintain stable fuel pressure and ensure adequate fuel return
  • Meets or exceeds OEM specifications
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Carquest – Fuel Injector Seal Kit (Part No.274830)

Fuel Injector Seal Kit

from

$49.05
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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Bosch – Fuel Injector 62803: New (Part No.62720)

Fuel Injector 62803: New

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$114.99
Bosch Port Fuel Injectors (PFI) have a robust design and are capable of using Ethanol fuel (E100). All Bosch fuel injectors released to the aftermarket are OE fit, form and function, and are produced to OE specifications. The Bosch fuel injector has a return rate of 1 part per million (PPM), making Bosch the industry benchmark. 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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Rein – Ambient Temp Sensor (Part No.P4025342395RIN)

Ambient Temp Sensor

from

$17.95
Ambient Temp Sensor

Carquest – Fuel Injector Connector (Part No.PT2318)

Fuel Injector Connector

from

$4.29
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
  • All electrical connectors are 100% tested for proper mechanical and electrical fit, form and function
  • Offering thousands of high-quality pigtails & sockets for nearly every electrical job
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Delphi – Fuel Pump and Strainer Set: With Reservoir Assembly (Part No.FE0703)

Fuel Pump and Strainer Set: With Reservoir Assembly

from

$533.99
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
  • Delphi pumps are designed to operate under extreme temperatures with quick engine starts and to avoid low-fuel hesitation, including alcohol fuels and blends
  • Improved pump performance as a result of Delphi’s innovative design and durability
  • Restores fast pressure performance and system integrity, translating to better pumping through less energy
  • Part is validated, tested and matched to the right vehicle application
  • When servicing the fuel system, always check the fuel filter for possible replacement
  • Always be sure to check and clean fuel tank to avoid unnecessary returns
  • Always replace the fuel strainer when doing a fuel pump repair
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Carquest Premium – Vapor Canister Purge Solenoid (Part No.CPC1026)

Vapor Canister Purge Solenoid

from

$31.99
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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Bosch – Bosch Purge Valve (Part No.B7080452523BOS)

Bosch Purge Valve

from

$25.30
The high-performance TEV canister purge valve constructed of plastic complies with all the requirements of manifold injection and gasoline direct injection.

Product Features:
  • Favorable price-to-performance ratio
  • Optimized triggering when minimal amounts are detected, giving quiet idling
  • Steeper rise of characteristic line
  • High maximum flow Installation on engine generates less noise
  • Integrated protective sieve prevents accumulation of dirt
  • Compact and light
  • Quick and simple fitting
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Delphi – Mass Air Flow Sensor (Part No.AF10558)

Mass Air Flow Sensor

from

$190.99
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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Cardone – Mass Air Flow Sensor (Part No.74-10156)

Mass Air Flow Sensor

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$179.99
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 connections, 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.
  • 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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2004 Audi A8 Quattro Fuel and Emissions Systems

You count on your 2004 Audi A8 Quattro 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 55 Fuel and Emissions Systems ranging in price from $1.07 to $841.99, you’re sure to find everything you need for your 2004 Audi A8 Quattro.

Brands matter. If you want to shop a specific Fuel and Emissions Systems brand, we stock 20 different brands like Felpro, Bosch, and Dorman. 2004 Audi A8 Quattro Fuel and Emissions Systems start as low as $1.07!

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 285 extensive product reviews on 2004 Audi A8 Quattro Fuel and Emissions Systems. Some of the top-rated Fuel and Emissions Systems products we carry are Evaporative Emissions Purge Solenoid Valve with 4.5 stars and Fuel Injector Connector with 4.0 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 2004 Audi A8 Quattro below to get started!

Top-Rated Fuel and Emissions Systems Brands For Your 2004 Audi A8 Quattro

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 2004 Audi A8 Quattro running right for years to come. In our inventory you’ll find brands like Felpro, Bosch, Dorman, and even more.

Popular Carquest Premium Fuel and Emissions Systems

You’ll find popular Carquest Premium brand products across Gas Caps. All are waiting to get your 2004 Audi A8 Quattro back on the road. Some of the top-rated Carquest Premium products in these categories are:

Top-Rated Bosch Fuel and Emissions Systems


If Bosch are what you’re looking for, our inventory holds plenty. We stock Bosch brand Fuel and Emissions Systems for your 2004 Audi A8 Quattro, and some of our most reviewed Bosch parts include:

FAQs for 2004 Audi A8 Quattro Fuel and Emissions Systems

What are the most purchased Fuel and Emissions Systems for the 2004 Audi A8 Quattro?

Out of 55 Fuel and Emissions Systems for the 2004 Audi A8 Quattro, the most popular in our inventory are:
Fuel Injector O-Ring Kit
from $7.49
(109)
Fuel Injector O-Ring Kit
Fuel Injector O-Ring Kits
30 AMP 12 Volt 4 Pin Universal Relay
from $9.99
(8)
30 AMP 12 Volt 4 Pin Universal Relay
Vacuum Pump Relay
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 2004 Audi A8 Quattro Fuel and Emissions Systems?

Top-rated Fuel and Emissions Systems for your 2004 Audi A8 Quattro based on customer reviews/ratings are:
Evaporative Emissions Purge Solenoid Valve
from $52.99
(11)
Evaporative Emissions Purge Solenoid Valve
“Fits my 07 Silverado 2500 classic, turned the EVAP code off. Old ones valve was stuck in the open position allowing vapor to constantly flow into the”
Fuel Injector Connector
from $4.29
(1)
Fuel Injector Connector
“Used to seal a gasket.”