Audi A3 Fuel and Emissions Systems

Essential Audi A3 Fuel and Emissions Systems

Carquest Premium – Premium GDI Seal Tool Kit (Part No.ATK-001)

Premium GDI Seal Tool Kit

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$129.99
This premium tool kit is designed to ensure the correct installation of the combustion seal on Gasoline Direct Injectors (GDI), which require replacement any time the injector is reinstalled. This special tool allows for the expansion of the combustion seal to allow installation onto the injector’s tip and resizing tools to provide precise dimensioning to ensure proper combustion sealing. Constructed of high-quality stainless steel the tool will provide years of trouble-free service and can be used on over 100 unique styles of GDI injectors.

Product Features:
  • Includes two expansion cones
  • Includes two resizing tools
  • Includes one seal installation collet
  • Includes hard case
  • Includes instruction manual
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Carquest Premium – Fuel Injector Seal Kit (Part No.AS070)

Fuel Injector Seal Kit

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$17.99
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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Carquest Premium – Vapor Canister Purge Solenoid (Part No.CPG1647)

Vapor Canister Purge Solenoid

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$108.99
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

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$480.99
Demand for Gasoline Direct injection (GDi) technology globally is expected to grow in excess of 10 percent annually through 2026. Delphi uses the latest generation of OE technology for our GDi, and our GDi service program includes the OE parts, tools and know-how to service this fast-growing, high-performance technology. Delphi is a leading Tier 1 supplier of GDi systems to global OEMs. We offer multiple GDi specific training classes, a technician support hotline staffed by ASE certified technicians, and a full line of GDi high-pressure fuel pumps. Learn more about our training programs and tech hotline at 1-877-463-3574.

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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Bosch – Oxygen Sensor: 4 Wire, 31.1" Long, Heated, Exact Fit (Part No.16036)

Oxygen Sensor: 4 Wire, 31.1" Long, Heated, Exact Fit

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$183.99
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
  • 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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Carquest Premium – Manifold Absolute Pressure Sensor (Part No.ECA2543)

Manifold Absolute Pressure Sensor

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$128.99
Pressure sensors are used within several operating systems on the vehicle. Subjects in this category measure the pressure of both liquid and air to include air in a positive pressure and negative pressure range. Pressure sensors report out as the result of an electrical device called a strain gauge which produces an analog or digital signal output dependent on the needs of the circuit. Pressures may be very low such as barometric pressure, or extremely high such as in a high-pressure fuel injection system.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • Robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
  • Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
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Delphi – Fuel Tank Cleaning Kit (Part No.FC01)

Fuel Tank Cleaning Kit

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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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DENSO – Wideband Oxygen Sensor: Upstream, 5 Wire, 26.89" Long, Heated, Exact Fit (Part No.234-5185)

Wideband Oxygen Sensor: Upstream, 5 Wire, 26.89" Long, Heated, Exact Fit

from

$167.99
DENSO Air/Fuel Ratio 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. DENSO gives you the right part and the right fit.

Product Features:
  • Specifically designed to meet the increasing demands of today’s engines
  • 100 percent 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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Carquest Premium – Fuel Pressure Sensor (Part No.FPA1021)

Fuel Pressure Sensor

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$101.99
Pressure sensors are used within several operating systems on the vehicle. Subjects in this category measure the pressure of both liquid and air to include air in a positive pressure and negative pressure range. Pressure sensors report out as the result of an electrical device called a strain gauge which produces an analog or digital signal output dependent on the needs of the circuit. Pressures may be very low such as barometric pressure, or extremely high such as in a high-pressure fuel injection system.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • Robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
  • Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
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Rein – Breather Hose (Part No.ABV0165)

Breather Hose

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$25.99
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 – Diverter Valve (Part No.ECC2445)

Diverter Valve

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$322.99
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:
  • Application matched component to ensure the system can be returned to like new condition.
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
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Carquest Premium – Fuel Cap Tester Adapter: (Part No.12426)

Fuel Cap Tester Adapter:

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$43.99
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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Carquest – Fuel Injector Seal Kit (Part No.274831)

Fuel Injector Seal Kit

from

$16.05
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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Dorman – Evaporative Emissions Purge Solenoid Valve (Part No.911-800)

Evaporative Emissions Purge Solenoid Valve

from

$65.99
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 – Mass Air Flow Sensor (Part No.AF10480)

Mass Air Flow Sensor

from

$154.99
Every single Delphi mass air flow (MAF) sensor that we manufacture – whether with or without the housing – is built with calibrated all-new components and is never remanufactured. Our mass air flow sensors are designed and tested to meet or exceed OE requirements, and engineered for a perfect fit in more than 180 million vehicles on the road today in North America – including makes from Ford, Toyota, Nissan, Volkswagen, Hyundai, BMW, Honda, GM, Mazda, Subaru, Acura and more.

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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Bosch – Pressure regulator (Part No.0281006074)

Pressure regulator

from

$186.99
Bosch is the leading OE supplier of diesel fuel systems for diesel passenger cars, SUVs, van and pickup trucks.

Product Features:
  • Bosch is the leading OE supplier of diesel fuel systems for diesel passenger cars, SUVs, van and pickup trucks.
  • End of line testing using the exact OE test specifications.
  • Guaranteed to provide OE performance and meet all emission specifications.
  • Continuous improvement, remanufactured with the latest upgrades to components and specifications.
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Carquest Premium – EGR Valve (Part No.EGC2426)

EGR Valve

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$565.99
Carquest Premium exhaust gas recirculation (EGR) valves are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Our Carquest Premium EGR valves are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Carquest Premium EGR valves undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium EGR valves are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • Precision engineering and robust design to withstand harsh under hood environment
  • Gaskets or seals are included if required for installation
  • Extensive design validation testing and 100% end-of-line tested
  • Where applicable stainless-steel sleeves used over cold rolled sleeves providing smooth EGR pintle operation under all operating conditions.
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
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Carquest Premium – High Pressure Fuel Feed Line (Part No.A500-19)

High Pressure Fuel Feed Line

from

$119.99
CARQUEST premium fuel lines meet or exceed critical OE performance specifications for sealing and burst pressure. Line requires replacement any time it is removed during servicing of fuel system.

Product Features:
  • Premium OE quality materials
  • Precision machined fittings with corrosion resistant plating
  • Precision formed exact-fit geometry ensures accurate connection points
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Carquest Premium – Multi-Purpose Relay (Part No.RAA1882)

Multi-Purpose Relay

from

$23.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
  • Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
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Dorman – Exhaust Gas Recirculation (EGR) Tube (Part No.598-218)

Exhaust Gas Recirculation (EGR) Tube

from

$121.99
This exhaust gas recirculation (EGR) line is designed to match the fit of an original EGR line on specified vehicles. It is engineered to help restore proper air-fuel balance when a line is malfunctioning due to deposits built up in the EGR valve.

Product Features:
  • Direct replacement – this exhaust gas recirculation line is designed to match the fit and function of the original equipment EGR line
  • Ideal solution – engineered to help restore proper air-fuel balance when a line is malfunctioning due to deposits built up in the EGR valve
  • Durable construction – designed and manufactured to strict specifications for reliable performance
  • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
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Rein – Thermo Switch (Part No.ELT0059)

Thermo Switch

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$13.99
Electrical parts control all aspects of vehicles on the road today. Replacing these components when they are starting to fail will ensure your vehicle has maximum performance and fuel economy. This is why Rein Automotive electrical parts are application specific and match the design and function of the OE parts.

Product Features:
  • Tested to ensure maximum performance
  • Manufactured to strict engineering standards/specifications in materials and tolerances
  • Long life and durability
  • Made by the OE manufacturer
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Carquest Premium – Fuel Pump Module Assembly: Fuel Pump, Sending Unit and Strainer (Part No.M2496398)

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

from

$223.99
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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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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Carquest Premium – Air Charge Temperature Sensor (Part No.WTA1398)

Air Charge Temperature Sensor

from

$73.99
The temperature of various systems must be reported to the engine control module (ECM) as well as other operating system controllers in the vehicle. Coolant temperature, cabin temperature, exhaust temperature and ambient temperature are just a few systems reported by a temperature sensor. The temperature sensor is fed 5 volts by the systems computer, within the sensor housing will be a thermistor, or dropping resistor whose resistance value will change as the temperature surrounding it changes. Changing resistance in the circuit will change the volt signal at the processor indicating the current operating value.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
  • Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
  • Lead frame terminal size and location determined using image dimension measuring system or 3D laser scanner.
  • Application matched components ensures system operation in like new condition.
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Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17597)

Keyed Alike Locking Fuel Cap

from

$15.99
Product Features:
  • Protects your fuel from theft and vandalism
  • Manufactured from durable, long-life materials
  • 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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Helping You Find the Right Fuel and Emissions Systems for Your Audi A3

You love your A3. So we’ve made it easier than ever to help you find Audi A3 Fuel and Emissions Systems in our online catalog. Our inventory holds 85 aftermarket and OEM Fuel and Emissions Systems for your Audi A3, ranging from $9.99 to $571.19.

We offer parts from 11 brands trusted to make quality Fuel and Emissions Systems for your Audi A3. Before you buy, take some time to read through customer reviews. We currently have 2,354 reviews of Audi A3 Fuel and Emissions Systems from previous customers. Some of the top rated parts include Locking Fuel Cap: Screw On, Direct Fit, Provides Tight Seal, 1 Pack with 5.0 stars and Wideband Oxygen Sensor: 5 Wire, 28.74" Long, Heated, Exact Fit with 5.0 stars.

Find your A3 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 A3 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 A3

Our inventory holds Fuel and Emissions Systems for your Audi A3 from 11 trusted brands. You’ll find OEM and aftermarket parts from brands like Bosch, Delphi, and Carquest Premium, all of which can keep that Audi happy.
We have Dorman parts available for your Audi A3 in categories like Vapor Canister Purge Valves. Some of the top-rated Dorman parts in these categories are:
Evaporative Emissions Purge Solenoid Valve
from $65.99
(11)
Evaporative Emissions Purge Solenoid Valve
Vapor Canister Purge Valves

FAQs for Audi A3 Fuel and Emissions Systems

What are the most purchased Fuel and Emissions Systems for the Audi A3?

Out of 85 Fuel and Emissions Systems for the Audi A3, the most popular in our inventory are:
Fuel Tank Cleaning Kit
from $12.49
This product is not rated
Fuel Tank Cleaning Kit
Fuel Tank Cleaning Kits
Non-Locking Fuel Tank Cap
from $12.99
(2)
Non-Locking Fuel Tank Cap
Gas Caps

What are the top-rated Audi A3 Fuel and Emissions Systems?

Top-rated Fuel and Emissions Systems for your Audi A3 based on customer reviews/ratings are:
Wideband Oxygen Sensor: 5 Wire, 28.74" Long, Heated, Exact Fit
from $153.99
(1)
Wideband Oxygen Sensor: 5 Wire, 28.74" Long, Heated, Exact Fit
“The brake pads were installed and work as designed”
Oxygen Sensor: 4 Wire, 28.74" Long, Heated, Exact Fit
from $149.99
(1)
Oxygen Sensor: 4 Wire, 28.74" Long, Heated, Exact Fit
“Bought this to replae my 2012 Audi A4 Quattro downstream O2 sensor. The performance of the car definitely picked up. My upstream sensor went out yeste”