2004 Audi A4 Fuel and Emissions Systems

Essential 2004 Audi A4 Fuel and Emissions Systems

Rein – Ambient Temp Sensor (Part No.P4025342395RIN)

Ambient Temp Sensor

from

$17.95
Ambient Temp Sensor

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

Evaporative Emissions Purge Solenoid Valve

from

$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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Vaico – Q+ OE Quality Vacuum Non Return Check Valve (Part No.B2024299234VCO)

Q+ OE Quality Vacuum Non Return Check Valve

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$43.99
The Vaico Vacuum Non Return Check Valve is a high quality Original Equipment replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:
  • Made in Germany OE Quality
  • Premium Original Equipment replacement
  • Provides performance and dependability
  • Manufactured to meet OE specifications Q+ The Seal of Excellence
  • ALWAYS OEM QUALITY
  • ALWAYS MADE IN GERMANY
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Wells Vehicle Electronics – Fuel Injection Pressure Regulator (Part No.5G1568)

Fuel Injection Pressure Regulator

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$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 – Boost Pressure Sensor (Part No.C7044397109BOS)

Boost Pressure Sensor

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$59.41
All Bosch High Pressure Sensors provide very reliable and accurate measurements and have extremely fast response times to ensure your vehicle runs as intended.

Product Features:
  • Built-in circuit protection to ensure your electronics and computer systems stay unharmed
  • High reliability of pressure sensing proved in gasoline and diesel direct injection systems
  • Sturdy design, vibration resistant and thermal stability
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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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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 – Vapor Canister (Part No.CPN1736)

Vapor Canister

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$821.99
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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Elring – Fuel Injector O-Ring (Part No.C101262400ELR)

Fuel Injector O-Ring

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$1.07
Fuel Injector O-Ring

Carquest Premium – Multi Purpose Relay (Part No.RAA1816)

Multi Purpose Relay

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$55.99
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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Carquest Premium – Secondary Air Injection Pump Check Valve (Part No.EGA1181)

Secondary Air Injection Pump Check Valve

from

$49.99
The Secondary Air Injection system is an emission control device designed to pump fresh air into the engine exhaust system to reduce harmful emissions and convert the emission into harmless water vapor via a chemical reaction. These systems were used heavily in the pre-catalytic converter emission control period but found some application in vehicles with catalytic converter systems.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
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Dorman – Secondary Air Injection Pump (Part No.306-031)

Secondary Air Injection Pump

from

$476.99
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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Original Equipment – Relay (Part No.P2020384416OEA)

Relay

from

$12.88
Relay

Elring – EGR Adapter Gasket (Part No.B7102387165ELR)

EGR Adapter Gasket

from

$3.34
EGR Adapter Gasket

APA/URO Parts – Crankcase Breather Hose (Part No.B2010148292APA)

Crankcase Breather Hose

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$36.47
Air hoses and lines for diesel and gasoline engines with additional blow-by for crankcase ventilation. Prefabricated modules in raw and clean air duct using injection-molded elastomer and plastic items, and blow-molded items.

Product Features:
  • Mount for temperature sensors
  • Noise damping
  • Folds and ribs for flexibility and vacuum stability
  • Molded-on mounts for wires or cables
  • Integrated flow divider
  • Integrated positioning and attachment of prefabricated hose clamps
  • Radial reinforcement for high vacuum stress in tight installation spaces
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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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Vemo – Air Temp. Sensor (Part No.C60002930617VMO)

Air Temp. Sensor

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$46.60
Air Temp. Sensor

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

30 AMP 12 Volt 4 Pin Universal Relay

from

$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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Elring – Fuel Injector Repair (Part No.C1040468293ELR)

Fuel Injector Repair

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$26.71
Fuel Injector Repair

Dorman – Mass Air Flow Sensor Connector (Part No.645-924)

Mass Air Flow Sensor Connector

from

$29.99
This mass air flow sensor 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 mass air flow sensor 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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BLAU – Fuel Tank (Gas) Cap (Part No.E201031981BLA)

Fuel Tank (Gas) Cap

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$45.39
Blau Fuel Tank Caps are manufactured to meet OE quality, and performance for reliable operation.

Product Features:
  • Meets OE vehicle standards
  • Factory type retaining strap for user convenience
  • OE quality seal ensures fuel tank emissions are maintained preventing check engine warnings.
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Pierburg – Secondary Air Inj. S (Part No.B7067242629APG)

Secondary Air Inj. S

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$93.21
Secondary Air Inj. S

Carquest Premium – Fuel Pump Module Assembly: Fuel Pump, Sending Unit and Strainer (Part No.M635629)

Fuel Pump Module Assembly: Fuel Pump, Sending Unit and Strainer

from

$307.99
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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Kayser – Vacuum Check Valve (Part No.O404032232KAY)

Vacuum Check Valve

from

$23.71
Vacuum Check Valve

Victor Reinz – Fuel Injection Throttle Body Mounting Gasket (Part No.71-16588-00)

Fuel Injection Throttle Body Mounting Gasket

from

$9.99
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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Felpro – Fuel Injection Throttle Body Mounting Gasket (Part No.61330)

Fuel Injection Throttle Body Mounting Gasket

from

$5.49
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 and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
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Bosch – Port Fuel Injector (Part No.C1000290569BOS)

Port Fuel Injector

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$146.00
Port Fuel Injection (PFI) is the world’s most widely used system for internal combustion engines and offers many advantages for engines with a low pressure output.

Product Features:
  • Low-pressure systems are less complex and more affordable than high-pressure systems
  • Robust combustion process tolerates lower-quality fuel
  • Maintenance-friendly design reduces the overhead for system diagnostics
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Carquest – Fuel Injector (Part No.67281)

Fuel Injector

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$127.05
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
  • Precision-wound and precision-trimmed solenoid windings allow the computer to command efficient delivery of fuel
  • High-temp Viton® O-rings enable prolonged sealing of injector under extreme heat conditions
  • Fiber-optic yttrium aluminum garnet “YAG” laser welding and 100 million cycle testing ensure quality in every box
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2004 Audi A4 Fuel and Emissions Systems

You count on your 2004 Audi A4 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 79 Fuel and Emissions Systems ranging in price from $1.07 to $821.99, you’re sure to find everything you need for your 2004 Audi A4.

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 A4 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 1,154 extensive product reviews on 2004 Audi A4 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 Cap: 10827, Screw On, Direct Fit, Provides Tight Seal, 1 Pack with 2.5 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 A4 below to get started!

Top-Rated Fuel and Emissions Systems Brands For Your 2004 Audi A4

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 A4 running right for years to come. In our inventory you’ll find brands like Felpro, Bosch, Dorman, and even more.

Popular Hitachi Fuel and Emissions Systems

You’ll find popular Hitachi brand products across Fuel Injectors. All are waiting to get your 2004 Audi A4 back on the road. Some of the top-rated Hitachi products in these categories are:
Mass Air Flow Sensor
from $164.99
(2)
Mass Air Flow Sensor
Air Flow Meters and Mass Air

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 A4, and some of our most reviewed Bosch parts include:

FAQs for 2004 Audi A4 Fuel and Emissions Systems

What are the most purchased Fuel and Emissions Systems for the 2004 Audi A4?

Out of 79 Fuel and Emissions Systems for the 2004 Audi A4, 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 A4 Fuel and Emissions Systems?

Top-rated Fuel and Emissions Systems for your 2004 Audi A4 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 Cap: 10827, Screw On, Direct Fit, Provides Tight Seal, 1 Pack
from $16.49
(8)
Fuel Cap: 10827, Screw On, Direct Fit, Provides Tight Seal, 1 Pack
“Fits perfect & works fine. No check engine light (CEL) on the dash. It has a seal and is a right fit.”
Mass Air Flow (MAF) Sensor
from $169.99
(2)
Mass Air Flow (MAF) Sensor
“I know the price is really high for this part, but if you want reliability, efficiency and performance to be as it should, do not skimp on your MAF an”