2021 Audi RS5 Fuel and Emissions Systems

Essential Fuel and Emissions Systems for 2021 Audi RS5s

Delphi – Fuel Tank Cleaning Kit (Part No.FC01)

Fuel Tank Cleaning Kit

from

$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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NTK – Switching Oxygen Sensor: 4 Wire, 31.5" Long, Heated, Direct Fit (Part No.25657)

Switching Oxygen Sensor: 4 Wire, 31.5" Long, Heated, Direct Fit

from

$145.99
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 – First Time Fit Oxygen Sensor (Part No.C5010835000ND)

First Time Fit Oxygen Sensor

from

$217.67
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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Bosch – Oxygen Sensor: 4 Wire, 28.74" Long, Heated, Exact Fit (Part No.16136)

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

from

$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. 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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Bosch – Bosch Oxygen Sensor (Part No.C5010389373BOS)

Bosch Oxygen Sensor

from

$188.83
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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DENSO – Oxygen Sensor: Downstream, 4 Wire, 28.74" Long, Heated, Exact Fit (Part No.234-4754)

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

from

$167.99
DENSO Oxygen 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. 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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Walker – Walker Oxygen Sensor (Part No.C5010380204WKR)

Walker Oxygen Sensor

from

$95.40
Walker Oxygen Sensors are precision made for outstanding performance and manufactured to meet and exceed all original equipment specification and test requirements.

Product Features:
  • Improved Engine Response and Performance
  • Lower Emissions
  • Improved Fuel Economy
  • Longer Sensor Life
  • Meets OEM Specifications Installation Notes: Vehicles equipped with Air Fuel Ratio Sensors may look very similar to the Oxygen Sensor. Please confirm the correct part before ordering and if the connector does not match, do not install
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Bosch – Oxygen Sensor: 4 Wire, 24.92" Long, Heated, Universal (Part No.15733)

Oxygen Sensor: 4 Wire, 24.92" Long, Heated, Universal

from

$80.99
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
  • Includes Smart Link Connector, no soldering required
  • No special tools required for installation
  • Seared protection tube due to 100% functional quality test
  • Performance meets or exceeds OE specifications
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DENSO – Oxygen Sensor: Downstream, 4 Wire, 28.94" Long, Heated, Exact Fit (Part No.234-4485)

Oxygen Sensor: Downstream, 4 Wire, 28.94" Long, Heated, Exact Fit

from

$154.99
DENSO Oxygen 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. 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
See More

NTK – Wideband Oxygen Sensor: Air-Fuel Ratio 5 Wire, 22.75" Long, Heated, Direct Fit (Part No.27050)

Wideband Oxygen Sensor: Air-Fuel Ratio 5 Wire, 22.75" Long, Heated, Direct Fit

from

$149.99
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
See More

DENSO – Wideband Oxygen Sensor: Upstream, 5 Wire, 22.24" Long, Heated, Exact Fit (Part No.234-5093)

Wideband Oxygen Sensor: Upstream, 5 Wire, 22.24" Long, Heated, Exact Fit

from

$187.99
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
See More

Upgrade your 2021 Audi RS5 with Top-Quality Fuel and Emissions Systems

When it comes to maintaining or upgrading your 2021 Audi RS5, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Audi or enhancing its overall performance, Fuel and Emissions Systems are key to keeping your RS5 functioning at its best. At Advance Auto Parts, we offer a wide selection of 5 Fuel and Emissions Systems for the 2021 Audi RS5, designed to meet your needs without breaking the bank. From Air Flow Sensor replacements to Fuel Tanks upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Fuel and Emissions Systems for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Fuel and Emissions Systems for your 2021 Audi RS5 at great prices. Our Fuel and Emissions Systems inventory for this model ranges from just $12.49 to $261.99, with an average price of $157.89. Our 5 Fuel and Emissions Systems in stock come from 2 trusted brands, so you’re sure to find the right part for your 2021 Audi RS5 without overspending.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Fuel and Emissions System upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 2021 Audi RS5 is always ready to roll. We’re committed to providing you with everything you need to keep your RS5 in top shape, all in one place. Start shopping confidently below for your 2021 Audi RS5!

Best-Selling Air Flow Sensors for 2021 Audi RS5s

Enhance the driving experience in your Audi with 2 quality Air Flow Sensor components, starting at $227.99.

DENSO – Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 26.57 (Part No.234-5739)

Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 26.57

from

$261.99
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 time.
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DENSO – Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 22.83 (Part No.234-5738)

Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 22.83

from

$227.99
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 time.
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Most Popular 2021 Audi RS5 Fuel Tanks

Customize your Audi with 1 Fuel Tanks products like Fuel Tank Cleaning Kits, all priced under $12.49.

Delphi – Fuel Tank Cleaning Kit (Part No.FC01)

Fuel Tank Cleaning Kit

from

$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
See More

Top Picks for 2021 Audi RS5 Oxygen Sensors

Upgrade Audi RS5s with top-quality Oxygen Sensors parts, including 2 OEM and aftermarket selections for your 2021 model.

DENSO – Oxygen Sensor 4 Wire, Direct Fit, Heated, Wire Length: 35.83 (Part No.234-8061)

Oxygen Sensor 4 Wire, Direct Fit, Heated, Wire Length: 35.83

from

$148.99
DENSO Oxygen 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. 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.
See More

DENSO – Oxygen Sensor 4 Wire, Direct Fit, Heated, Wire Length: 30.71 (Part No.234-8068)

Oxygen Sensor 4 Wire, Direct Fit, Heated, Wire Length: 30.71

from

$137.99
DENSO Oxygen 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. 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.
See More

FAQs for 2021 Audi RS5 Fuel and Emissions Systems

Which Fuel and Emissions Systems are best-sellers for 2021 Audi RS5s?

Out of 5 Fuel and Emissions Systems that fit 2021 Audi RS5s, the following parts are the top sellers:

What’s the price range for 2021 Audi RS5 Fuel and Emissions Systems?

Fuel and Emissions System prices for the 2021 Audi RS5 start at $12.49 and go up to $261.99 for the most premium parts.

What’s the average price of a Fuel and Emissions System for a 2021 Audi RS5?

The average price for Fuel and Emissions Systems for the 2021 Audi RS5 is $157.89. Keep in mind the variety of part types within our Fuel and Emissions System category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Fuel and Emissions Systems for other Audi RS5 model years?

Yes, we currently carry Fuel and Emissions Systems for 8 model years of Audi RS5s between 2013 and 2024. Fuel and Emissions Systems are bought most frequently for the following model years: 2023, 2022, 2019, 2018, 2015, 2014, 2013, and 2024.

What are the cheapest Fuel and Emissions Systems for my 2021 Audi RS5?

The cheapest 2021 Audi RS5 Fuel and Emissions Systems we carry in stock are:

What types of Fuel and Emissions Systems do you sell for my 2021 Audi RS5?

As of 2/5/25, these are some of the most in-demand types of Fuel and Emissions Systems for a 2021 Audi RS5:

Can I get help with 2021 Audi RS5 Fuel and Emissions System orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Audi Fuel and Emissions Systems and more.

What is your return policy for Audi RS5 Fuel and Emissions Systems?

Advance Auto Parts keeps returns simple. For new Audi RS5 Fuel and Emissions Systems and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.