2021 Audi A6 Quattro Fuel and Emissions Systems

Essential 2021 Audi A6 Quattro Fuel and Emissions Systems

NTK – Switching Oxygen Sensor: 4 Wire, 28.5" Long, Heated, Direct Fit (Part No.25083)

Switching Oxygen Sensor: 4 Wire, 28.5" Long, Heated, Direct Fit

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$116.99
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. Providing constant closed loop feedback to the ECU, oxygen sensors help to control the air-fuel ratio while alerting OBDII systems of possible problems with fuel delivery or catalytic converter efficiency. A ceramics company at our core, NTK uses state-of-the art technology enabling control of the ceramic element used in our 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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DENSO – Oxygen Sensor: Downstream, 4 Wire, 19.69" Long, Heated, Exact Fit (Part No.234-4120)

Oxygen Sensor: Downstream, 4 Wire, 19.69" Long, Heated, Exact Fit

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$126.99
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO’s exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.

Product Features:
  • Specifically designed to meet the increasing demands of today’s engines
  • 100% 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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Bosch – Oxygen Sensor: 4 Wire, 66.93" Long, Heated, Exact Fit (Part No.13552)

Oxygen Sensor: 4 Wire, 66.93" Long, Heated, Exact Fit

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$134.99
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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Bosch – Oxygen Sensor: 4 Wire, 44.57" Long, Heated, Exact Fit (Part No.18108)

Oxygen Sensor: 4 Wire, 44.57" Long, Heated, Exact Fit

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$235.99
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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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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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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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 Premium – Fuel Cap Tester Adapter (Part No.12410)

Fuel Cap Tester Adapter

from

$15.99
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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DENSO – First Time Fit Oxygen Sensor (Part No.C5010374962ND)

First Time Fit Oxygen Sensor

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$299.14
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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DENSO – Wideband Oxygen Sensor: Upstream, 5 Wire, 28.74" Long, Heated, Exact Fit (Part No.234-5028)

Wideband Oxygen Sensor: Upstream, 5 Wire, 28.74" Long, Heated, Exact Fit

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$234.99
DENSO Air/Fuel Ratio Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance.; Each component is precision-built for exact replacement+ and a first time fit.; DENSO gives you the right part and the right fit+ the first time.

Product Features:
  • Specifically designed to meet the increasing demands of today’s engines
  • 100% 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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DENSO – Wideband Oxygen Sensor: Upstream, 5 Wire, 22.52" Long, Heated, Exact Fit (Part No.234-5164)

Wideband Oxygen Sensor: Upstream, 5 Wire, 22.52" Long, Heated, Exact Fit

from

$231.99
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 the first t

Product Features:
  • Specifically designed to meet the increasing demands of today’s engines
  • 100% 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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DENSO – Wideband Oxygen Sensor: Upstream, 5 Wire, 28.74" Long, Heated, Exact Fit (Part No.234-5129)

Wideband Oxygen Sensor: Upstream, 5 Wire, 28.74" Long, Heated, Exact Fit

from

$185.99
DENSO Air/Fuel Ratio Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance.; Each component is precision-built for exact replacement+ and a first time fit.; DENSO gives you the right part and the right fit+ the first time.

Product Features:
  • Specifically designed to meet the increasing demands of today’s engines
  • 100% 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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Bosch – Oxygen Sensor (Part No.C50101333737BOS)

Oxygen Sensor

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$199.31
The Bosch oxygen sensor utilizes a mix of zirconium and yttrium oxides and other elements to form a tough base that withstands the intense stress to which oxygen sensors are subjected. Each element is incredibly strong for best-in-class performance and maximum service life.

Product Features:
  • OE-Equivalent.
  • Direct fit for easy installation.
  • OE Style connectors and wire lengths.
  • Base ceramic probe of Zirconium and Yttrium.
  • Patented Platinum Power Grid.
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Bosch – Fuel Vapor Leak Detection Pump for Emissions Inspections (Part No.B70732233919BOS)

Fuel Vapor Leak Detection Pump for Emissions Inspections

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$111.58
The Bosch Fuel Vapor Leak Detection Pump ascertains leaks or related problems in the fuel system. A functional Vapor Leak Detection Pump is necessary in states that require an Emissions Inspection.

Product Features:
  • Helps to reduce atmospheric pollution due to hydrocarbon emissions
  • Direct replacement for a proper fit every time
  • Durable against salt, debris, and other harsh undercar conditions
  • On-vehicle and laboratory testing has been conducted on this part to ensure a trouble-free performance
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Carquest Premium – Evaporative Emissions System Leak Detection Pump (Part No.VDC1003)

Evaporative Emissions System Leak Detection Pump

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$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 – Evaporative Emissions System Leak Detection Pump (Part No.VDN1049)

Evaporative Emissions System Leak Detection Pump

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$264.99
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 – MAP Sensor (Part No.C7044666815OEA)

MAP Sensor

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$47.94
Original Equipment Manifold Absolute Pressure/Manifold Air Temperature Sensors are designed to perform in harsh environments such as extreme temperatures and vibration, thermal and mechanical shock. The Original Equipment Manifold Absolute Pressure sensor is the ORIGINAL part, supplied in a plain box, with the car manufacturer’s logo on the part.

Product Features:
  • Designed for under-hood environments
  • All-silicon, solid-state microelectronic technology
  • Temperature compensation
  • Electromagnetic interference (EMI) protection
  • Air temperature output
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Dorman – Evaporation Pres Sen (Part No.E20701697887DOR)

Evaporation Pres Sen

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$165.70
Evaporation Pres Sen

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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Bosch – MAP Sensor (Part No.C70442424624BOS)

MAP Sensor

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$46.51
MAP Sensor

Carquest Premium – Manifold Absolute Pressure Sensor (MAP) (Part No.ECA2453)

Manifold Absolute Pressure Sensor (MAP)

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$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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Bosch – MAP Sensor (Part No.C704435966BOS)

MAP Sensor

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$556.04
Bosch Manifold Absolute Pressure (MAP) Sensors provide accurate air pressure measurement to very fine tolerances for efficient engine performance.

Product Features:
  • Extremely sturdy design with a special coating for resistance of harmful chemicals inside the intake manifold.
  • Bosch continually improves its MAP sensor designs with the latest chip technology.
  • Designed to meet or exceed your vehicle’s original equipment specifications (performance, driveability, economy, emissions)
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Carquest Premium – Fuel Pump Relay (Part No.RAA2248)

Fuel Pump Relay

from

$14.99
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 – Multi Purpose Relay (Part No.RAA1319)

Multi Purpose Relay

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$9.49
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.
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Original Equipment – Relay (Part No.P2020384416OEA)

Relay

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$12.88
Relay

2021 Audi A6 Quattro Fuel and Emissions Systems

You count on your 2021 Audi A6 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 10 Fuel and Emissions Systems ranging in price from $12.49 to $227.99, you’re sure to find everything you need for your 2021 Audi A6 Quattro.

Brands matter. If you want to shop a specific Fuel and Emissions Systems brand, we stock 5 different brands like Delphi, Bosch, and Original Equipment. 2021 Audi A6 Quattro Fuel and Emissions Systems start as low as $12.49!

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 2021 Audi A6 Quattro below to get started!

FAQs for 2021 Audi A6 Quattro Fuel and Emissions Systems

What are the most purchased Fuel and Emissions Systems for the 2021 Audi A6 Quattro?

Out of 10 Fuel and Emissions Systems for the 2021 Audi A6 Quattro, 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
Fuel Vapor Leak Detection Pump for Emissions Inspections
from $111.58
This product is not rated
Fuel Vapor Leak Detection Pump for Emissions Inspections
Fuel Vapor Leak Detection Pumps
MAP Sensor
from $46.51
This product is not rated
MAP Sensor
MAP-Barometric Pressures