Audi A4 Quattro Fuel and Emissions Systems

Essential Audi A4 Quattro Fuel and Emissions Systems

DENSO – First Time Fit Oxygen Sensor (Part No.C5010690491ND)

First Time Fit Oxygen Sensor

from

$136.93
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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Carquest Premium – Exhaust Gas Recirculation (EGR) Valve Control Solenoid (Part No.CPA1371)

Exhaust Gas Recirculation (EGR) Valve Control Solenoid

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$181.99
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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Pierburg – Secondary Air Inj. S (Part No.B7067242629APG)

Secondary Air Inj. S

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$93.21
Secondary Air Inj. S

Bosch – Fuel Tank Sending Unit (Part No.E2030848445BOS)

Fuel Tank Sending Unit

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$75.99
The Bosch Fuel Tank Sending Unit 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 for fit, form, and function
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VDO – Intake Manifold Actuator (Part No.B1205393886VDO)

Intake Manifold Actuator

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$263.04
Intake Manifold Actuator

INA – Fuel Pump Tappet (Part No.E3013418177INA)

Fuel Pump Tappet

from

$36.95
Fuel Pump Tappet

Bosch – Bosch Purge Valve (Part No.B708062614BOS)

Bosch Purge Valve

from

$50.77
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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MAHLE Original – Vacuum Pump Mounting (Part No.B32548)

Vacuum Pump Mounting

from

$11.99
MAHLE gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.

Product Features:
  • All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
  • MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
  • MAHLE gaskets is the leader in Domestic, Asian and European applications
  • The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
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Dorman – Secondary Air Injection Check Valve (Part No.911-989)

Secondary Air Injection Check Valve

from

$272.99
This secondary air injection check valve is designed to match the fit and function of the original valve on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this secondary air injection check valve is designed to match the fit and function of the original valve on specified vehicles
  • Restores functionality – this valve is made to fit and fully restore part functionality after the original valve fails
  • 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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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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Carquest Premium – Manifold Absolute Pressure Sensor (MAP) (Part No.ECC1081)

Manifold Absolute Pressure Sensor (MAP)

from

$48.99
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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Kayser – Vacuum Check Valve (Part No.O404032232KAY)

Vacuum Check Valve

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$23.71
Vacuum Check Valve

Carquest Premium – Air Charge Temperature Sensor (Part No.WTA1883)

Air Charge Temperature Sensor

from

$63.99
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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Original Equipment – Fuel Pump Control Mo (Part No.E3006568274OEA)

Fuel Pump Control Mo

from

$259.39
Fuel Pump Control Mo

Rein – Breather Hose (Part No.ABV0183)

Breather Hose

from

$5.99
Rein Automotive OE quality breather hoses fit European vehicles the way the original manufacturer intended. Designed to be direct replacements for OE hoses, Rein hoses are identical to the OEM.

Product Features:
  • Matches original equipment design specifications.
  • Manufactured with high quality materials.
  • Direct fit for easy installation.
  • Resistant to heat, salt, road debris, oil and other contaminants.
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Carquest Premium – Manifold Absolute Pressure Sensor (MAP) (Part No.ECA2453)

Manifold Absolute Pressure Sensor (MAP)

from

$101.99
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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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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Original Equipment – Crankcase Breather Hose (Part No.B2010313687OEA)

Crankcase Breather Hose

from

$212.29
The Original Equipment Crankcase Breather Hose is an ideal 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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Pierburg – Brake Vacuum Pump (Part No.N4050446713APG)

Brake Vacuum Pump

from

$229.05
Brake Vacuum Pump

Felpro – O-RING (Part No.71857)

O-RING

from

$3.99
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
  • Design to ensure a perfect fit
  • Engineered and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
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Carquest Premium – Multi Purpose Relay (Part No.RAA1337)

Multi Purpose Relay

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$15.99
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 – Direct Injection High Pressure Fuel Pump: Without Gasket/Seal or Wiring Harness (Part No.HM10012)

Direct Injection High Pressure Fuel Pump: Without Gasket/Seal or Wiring Harness

from

$554.99
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:
  • Capable of delivering fuel at high pressures that can range from 2,000-2,800 PSI
  • Mechanically driven high fuel flow pump enables rail pressure build up quickly for fast start times
  • Fuel delivered directly into the engine combustion chamber for increased horsepower and fuel economy
  • Meets OE specifications
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Hitachi – High Pressure Fuel Pump – New Actual OE Part (Part No.HPP0010)

High Pressure Fuel Pump - New Actual OE Part

from

$369.99
Hitachi’s High Pressure Fuel Pumps (HPPs) are designed to enhance fuel volume delivery for exceptional operation and faster vehicle response. Our HPPs are a good alternative to the standard fuel pump for direct injection, supercharged, and turbocharged applications commonly found in todays vehicles. Pump housing is made of high strength aluminum to ensure durability while keeping weight low. Precision machined surfaces prevent fuel leakage/pressure drop while chemical resistant seals prevent premature wear from ethanol mixed fuels. Designed to meet the exact needs of each specific vehicle, Hitachi’s High Pressure Fuel Pumps are the premium choice. Hitachi is a Tier One OE supplier to the largest automobile manufacturers globally, delivering industry leading quality, and exceeding customer expectations with our products and service. Hitachi is bringing that same knowledge and expertise to the premium products we deliver in the Aftermarket because Quality Matters.

Product Features:
  • These quality High Pressure Pumps provide exceptional operation with enhanced fuel volume delivery and faster vehicle response. Promotes a rise of fuel pressure from startup; reduces current consumption.
  • Hitachi is a Tier 1 OE supplier for high pressure fuel pumps
  • 100% NEW, never remanufactured
  • Meets the OE performance and durability standards for this application
  • High strength aluminum housing for light weight and durability
  • Chemical resistant seals prevent premature wear from ethanol mixed fuels
  • Precision machined surfaces prevent fuel leakage and subsequent pressure drop
  • O-Ring/Gaskets included when applicable
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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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Audi A4 Quattro Fuel and Emissions Systems Categories

Helping You Find the Right Fuel and Emissions Systems for Your Audi A4 Quattro

You love your A4 Quattro. So we’ve made it easier than ever to help you find Audi A4 Quattro Fuel and Emissions Systems in our online catalog. Our inventory holds 352 aftermarket and OEM Fuel and Emissions Systems for your Audi A4 Quattro, ranging from $1.07 to $821.99.

We offer parts from 36 brands trusted to make quality Fuel and Emissions Systems for your Audi A4 Quattro. Before you buy, take some time to read through customer reviews. We currently have 15,616 reviews of Audi A4 Quattro Fuel and Emissions Systems from previous customers. Some of the top rated parts include Mass Air Flow Sensor with 4.1 stars and Evaporative Emissions Purge Solenoid Valve with 4.5 stars.

Find your A4 Quattro Fuel and Emissions Systems here, order online, and have your order shipped directly to your home. Prefer to have an in-person look at your Audi A4 Quattro part to confirm it’s just right? You can find your nearest Advance Auto Parts store and confirm they have the part in stock before heading over.

Top Fuel and Emissions Systems Brands for Your Audi A4 Quattro

Our inventory holds Fuel and Emissions Systems for your Audi A4 Quattro from 36 trusted brands. You’ll find OEM and aftermarket parts from brands like Felpro, Bosch, and Carquest Premium, all of which can keep that Audi happy.
We have Hitachi parts available for your Audi A4 Quattro in categories like Fuel Injectors. Some of the top-rated Hitachi parts in these categories are:
Mass Air Flow Sensor
from $164.99
(2)
Mass Air Flow Sensor
Air Flow Meters and Mass Air
Air Flow Sensor - New Actual OE Part
from $279.99
(1)
Air Flow Sensor – New Actual OE Part
Air Flow Meters and Mass Air

Top-Rated Bosch Fuel and Emissions Systems

Leading Bosch Fuel and Emissions Systems

We carry Bosch brand parts for your Audi A4 Quattro across several catalog categories, including Oxygen Sensors. Some of our most reviewed Bosch parts include:

FAQs for Audi A4 Quattro Fuel and Emissions Systems

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

Out of 352 Fuel and Emissions Systems for the Audi A4 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
Oxygen Sensor: 4 Wire, 25.87" Long, Heated, Universal
from $61.99
This product is not rated
Oxygen Sensor: 4 Wire, 25.87" Long, Heated, Universal
Oxygen Sensors

What are the top-rated Audi A4 Quattro Fuel and Emissions Systems?

Top-rated Fuel and Emissions Systems for your Audi A4 Quattro based on customer reviews/ratings are:
Mass Air Flow Sensor
from $127.99
(16)
Mass Air Flow Sensor
“Fits n works like it should”
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”
30 AMP 12 Volt 4 Pin Universal Relay
from $9.99
(8)
30 AMP 12 Volt 4 Pin Universal Relay
“I used this unit to reconfigure my ignition on my 1974 C-10. Easy to wire up & so far everything is working fine.”