2021 Honda Accord Fuel and Emissions Systems

Name: Oxygen Sensor: 4 Wire, 20.28" Long, Heated, Exact Fit
Brand: DENSO
SKU: 234-4621
Price: 57.99 USD
Rating: 4.5 (332 reviews)

Below you will find various in-demand Honda Fuel and Emissions Systems, components and accessories for your 2021 Accord. Advance Auto Parts has popular Accord parts like Oxygen Sensors, Fuel Tanks, Vapor Canister Purge Valves and more. You’ll also find aftermarket and OEM Fuel and Emissions Systems for other Accord model years including 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2022 and more. Select a category of 2021 Honda Accord Fuel and Emissions Systems below and start saving instantly.

Popular 2021 Honda Accord Fuel and Emissions Systems Categories

Air- Fuel Ratio Sensors

Fuel Tank Cleaning Kits

Air Flow Meters and Mass Air

Oxygen Sensors

Vapor Canister Vent Solenoids

Vapor Canister Shutoff Valves

Manifold Air Pressure Sensors

Canister Purge Solenoids

Ambient Air Temperature Sensors

Fuel Line Connectors

EGR Valve Gaskets

Fuel Injector Seal Tool Set

Essential Fuel and Emissions Systems for 2021 Honda Accords

from

$57.99

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 poisoning for improved engine performance, greater fuel efficiency, and unparalleled longevity. 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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$61.99

NGK 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, 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: 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, Oxygen Sensors offer superior OE fit, form, function
OE TECHNOLOGY: Upgraded to the latest OE technologies, 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: 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
ADVANTAGE: Superior dual-coated platinum interface and thinner ceramic element produces fastest light off and response times with best durability

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$105.99

A malfunctioning vapor canister vent solenoid can cause the engine light to come on. This vapor canister vent solenoid is engineered of quality materials for durability to ensure proper operation of the vehicle’s evaporative emissions system.

Product Features:

Direct replacement – this vapor canister vent solenoid fits and performs like original equipment with simple plug-and-play installation
Quality construction – manufactured from premium materials for a long service life
Excellent value – original equipment function at a lower price
Quality tested – has undergone simulation and endurance testing to ensure proper fit and performance

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$98.99

Direct replacement – this vapor canister vent solenoid fits and performs like original equipment with simple plug-and-play installation
Quality construction – manufactured from premium materials for a long service life
Excellent value – original equipment function at a lower price
Quality tested – has undergone simulation and endurance testing to ensure proper fit and performance

from

$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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$76.99

Innovative engineering, manufacturing technology and quality control ensure that Spectra Premium mass air flow sensors meet or exceed the performance of the original equipment they replace.

Product Features:

Unit is designed to OE fit, form and function requirements accomplished by leveraging our OE engine management systems design expertise
Platinum connector threads reduce the number of connection points for faster reaction to change
Ceramic-built printed circuit boards are protected by silica gel, providing superior resistance to temperature changes and vehicle vibrations
Ceramic board provides reliable voltage to eliminate engine rough-idle problems
Each new sensor is road tested to ensure real world performance and to verify that each design meets our high standards for quality
Engineered to stringent tolerances based on our Canadian engineers’ in-depth knowledge of the OE part it’s designed to replace
Fit tested on the very same vehicle application for which it was developed verifying first-hand that the design fits properly and can be easily installed

from

$61.99

Advance Auto Parts is proud to carry all new mass air flow sensors that use high-quality components with the highest quality standards.

Product Features:

CARQUEST MAF use all new high-quality components at the highest quality standards.
Manufactured with new and advanced technology to perform, fit and function at OE specifications.
All new product that is tested with OEM equipment to OEM standards
Outperforms competition when tested in extreme environmental conditions

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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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$39.99

Maximize your vehicle’s efficiency and emissions control with Carquest Vapor Canister Purge Solenoids. Engineered for precision, these solenoids seamlessly regulate the flow of fuel vapors from the Vapor Canister to the engine for cleaner combustion, reducing harmful emissions. Built to meet and/or exceed OEM standards, Carquest Purge Solenoids offer reliable functionality, long-lasting durability, and easy installation.

Product Features:

Enhances overall engine performance by providing proper vapor flow to maintain correct air-fuel mixture.
Helps reduce harmful emissions and ensures compliance with environmental regulations by controlling the release of fuel vapors into the engine
Ensures precise operation with electromagnetic principles to control the flow of fuel vapors from the carbon canister to the engine
Manufactured from high quality engineered materials, resistant to fuel vapors and extreme temperatures, ensuring long lasting performance
Meets or exceeds all OEM specifications

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$54.99

Enhances overall engine performance by providing proper vapor flow to maintain correct air-fuel mixture.
Helps reduce harmful emissions and ensures compliance with environmental regulations by controlling the release of fuel vapors into the engine
Ensures precise operation with electromagnetic principles to control the flow of fuel vapors from the carbon canister to the engine
Manufactured from high quality engineered materials, resistant to fuel vapors and extreme temperatures, ensuring long lasting performance
Meets or exceeds all OEM specifications

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$10.99

This ambient air temperature sensor is designed to match the fit and function of the original sensor on specified vehicles, and is engineered for durability and reliable performance.

Product Features:

Direct replacement – this ambient air temperature sensor is designed to match the fit and function of the original sensor on specified vehicles
Ideal solution – this sensor is a reliable replacement for an original part that has failed due to fatigue or electrical malfunction
Durable construction – this sensor is made from quality components to ensure reliable performance and a 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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$26.99

Direct replacement – this ambient air temperature sensor is designed to match the fit and function of the original sensor on specified vehicles
Ideal solution – this sensor is a reliable replacement for an original part that has failed due to fatigue or electrical malfunction
Durable construction – this sensor is made from quality components to ensure reliable performance and a long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$9.99

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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$83.99

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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$88.99

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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$76.99

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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$183.99

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 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

from

$163.99

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

from

$225.99

from

$6.79

This fuel line clip is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:

Direct replacement – this fuel line clip matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this clip 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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$9.99

Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered for the sealing repair environment
Validated for fit, form and function
Unsurpassed quality you can trust

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$7.99

The EGR system is an emission control device designed to recirculate exhaust gas into the engines air intake system and back to the combustion chamber to control nitrogen oxides or NOx. The chemical NOx is created when oxygen and nitrogen are heated above 2,800-degree F. Exhaust gas, or gas that is displaced from the combustion chamber, contains little to no oxygen molecules. By recirculating this gas back into the combustion chamber fewer oxygen molecules are available for the combustion event which will therefore create a cooler combustion event. The EGR valve can be actuated by engine vacuum or electronically by the engine control module.

Product Features:

Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
Our EGR valves are designed to match the vehicle specific exhaust gas flow rate as designed by the engine manufacturer to provide clean tail pipe emissions.
Feedback EGR valves and pressure sensors contain a robust circuit board design which increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
Where applicable stainless-steel sleeves used over cold rolled sleeves providing smooth EGR pintle operation under all operating conditions.

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$6.29

Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered for the sealing repair environment
Validated for fit, form and function
Unsurpassed quality you can trust

from

$7.99

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered for the sealing repair environment
Validated for fit, form and function
Unsurpassed quality you can trust

from

$83.99

Ensure that your vehicle’s emission control system performs at its best with Carquest premium Vapor Canister Vent Valves. Manufactured for long-lasting performance, these Vent Valves provide reliable operation and help maintain your vehicle’s compliance with environmental regulations. For cleaner emissions, optimal vehicle efficiency and perfomance, trust Carquest Vapor Canister Vent Valves.

Product Features:

Provides closure for the EVAP system (normally vented) during OBD II test cycle
Includes integrated filter, where applicable, that captures contaminants and particulates from incoming air, preventing clogging and ensuring clean airflow
Quick valve response to engine demands, ensuring efficient venting of vapors and optimizing overall engine performance
Meets or exceeds all OEM specifications

from

$78.99

Provides closure for the EVAP system (normally vented) during OBD II test cycle
Includes integrated filter, where applicable, that captures contaminants and particulates from incoming air, preventing clogging and ensuring clean airflow
Quick valve response to engine demands, ensuring efficient venting of vapors and optimizing overall engine performance
Meets or exceeds all OEM specifications

from

$94.99

Direct replacement – this vapor canister vent solenoid fits and performs like original equipment with simple plug-and-play installation
Quality construction – manufactured from premium materials for a long service life
Excellent value – original equipment function at a lower price
Quality tested – has undergone simulation and endurance testing to ensure proper fit and performance

from

$103.99

Provides closure for the EVAP system (normally vented) during OBD II test cycle
Includes integrated filter, where applicable, that captures contaminants and particulates from incoming air, preventing clogging and ensuring clean airflow
Quick valve response to engine demands, ensuring efficient venting of vapors and optimizing overall engine performance
Meets or exceeds all OEM specifications

Upgrade your 2021 Honda Accord with Top-Quality Fuel and Emissions Systems

When it comes to maintaining or upgrading your 2021 Honda Accord, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Honda or enhancing its overall performance, Fuel and Emissions Systems are key to keeping your Accord functioning at its best. At Advance Auto Parts, we offer a wide selection of 21 Fuel and Emissions Systems for the 2021 Honda Accord, designed to meet your needs without breaking the bank. From Oxygen 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 Honda Accord at great prices. Our Fuel and Emissions Systems inventory for this model ranges from just $6.79 to $597.99, with an average price of $102.14. Our 21 Fuel and Emissions Systems in stock come from 7 trusted brands, so you’re sure to find the right part for your 2021 Honda Accord without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2021 Honda Accord, we stock popular OEM and aftermarket Fuel and Emissions Systems from top names like Spectra Premium, and more. Spectra Premium Fuel and Emissions Systems start at just $76.99 and boast an impressive 4.3 stars average rating from customers. With 32 customer reviews and counting, our 2021 Honda Accord Fuel and Emissions Systems have a strong track record of reliability, ensuring you can trust your purchase.

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 Honda Accord is always ready to roll. We’re committed to providing you with everything you need to keep your Accord in top shape, all in one place. Start shopping confidently below for your 2021 Honda Accord!

Best-Selling Oxygen Sensors for 2021 Honda Accords

Enhance the driving experience in your Honda with 1 quality Oxygen Sensor components, starting at $255.99.

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Oxygen Sensor: 4 Wire, Direct Fit, Heated, Wire Length: 15.55"

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$255.99

Top Picks for 2021 Honda Accord Vapor Canister Purge Valves

Upgrade Honda Accords with top-quality Vapor Canister Purge Valves parts, including 3 OEM and aftermarket selections for your 2021 model.

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from

$105.99

Direct replacement – this vapor canister vent solenoid fits and performs like original equipment with simple plug-and-play installation
Quality construction – manufactured from premium materials for a long service life
Excellent value – original equipment function at a lower price
Quality tested – has undergone simulation and endurance testing to ensure proper fit and performance

from

$83.99

Provides closure for the EVAP system (normally vented) during OBD II test cycle
Includes integrated filter, where applicable, that captures contaminants and particulates from incoming air, preventing clogging and ensuring clean airflow
Quick valve response to engine demands, ensuring efficient venting of vapors and optimizing overall engine performance
Meets or exceeds all OEM specifications

from

$103.99

Provides closure for the EVAP system (normally vented) during OBD II test cycle
Includes integrated filter, where applicable, that captures contaminants and particulates from incoming air, preventing clogging and ensuring clean airflow
Quick valve response to engine demands, ensuring efficient venting of vapors and optimizing overall engine performance
Meets or exceeds all OEM specifications

In-Demand Air Flow Sensors for 2021 Honda Accords

Select from 6 premium Air Flow Sensors parts for your 2021 Honda Accord, with prices ranging from $9.99 to $597.99.

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from

$76.99

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.

from

$91.99

DENSO’s MAP sensors offer leading edge sensing technology which helps controls fuel injection more precisely. They are compact lightweight and designed with fewer connections improving performance and reliability. DENSO’s MAP sensors have high detection accuracy which reduces emissions.

Product Features:

OE technology adapted for the aftermarket
Reduces emissions, increased performance
Delivers the highest reliability and detection accuracy

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$597.99

from

$225.99

from

$10.99

Direct replacement – this ambient air temperature sensor is designed to match the fit and function of the original sensor on specified vehicles
Ideal solution – this sensor is a reliable replacement for an original part that has failed due to fatigue or electrical malfunction
Durable construction – this sensor is made from quality components to ensure reliable performance and a long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$9.99

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.

Most Sold 2021 Honda Accord Fuel Injectors

Explore our best-selling Honda parts for the 2021 Accord among 6 OEM and aftermarket options starting from $61.99.

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from

$76.99

Unit is designed to OE fit, form and function requirements accomplished by leveraging our OE engine management systems design expertise
Platinum connector threads reduce the number of connection points for faster reaction to change
Ceramic-built printed circuit boards are protected by silica gel, providing superior resistance to temperature changes and vehicle vibrations
Ceramic board provides reliable voltage to eliminate engine rough-idle problems
Each new sensor is road tested to ensure real world performance and to verify that each design meets our high standards for quality
Engineered to stringent tolerances based on our Canadian engineers’ in-depth knowledge of the OE part it’s designed to replace
Fit tested on the very same vehicle application for which it was developed verifying first-hand that the design fits properly and can be easily installed

from

$61.99

Advance Auto Parts is proud to carry all new mass air flow sensors that use high-quality components with the highest quality standards.

Product Features:

CARQUEST MAF use all new high-quality components at the highest quality standards.
Manufactured with new and advanced technology to perform, fit and function at OE specifications.
All new product that is tested with OEM equipment to OEM standards
Outperforms competition when tested in extreme environmental conditions

from

$144.99

Hitachis Air Flow Sensors (MAFs) measure the amount and characteristics of air entering the engine. Hitachi uses precision elements and high-quality components for enhanced durability and accurate air flow measurements. Hitachi MAFs are 100% air flow tested for ideal performance and are calibrated for each application ensuring your vehicle meets the strict emission standards set by the manufacturer. Details such as a contaminant bypass port (when applicable) and protected circuitry providing a durable and reliable product approved by OE manufacturers makes Hitachis air flow sensors the premium choice.

Product Features:

Hitachi is a Tier 1 OE supplier for air flow sensors
100% NEW, never remanufactured
Hitachi’s advanced precision elements and high quality components provide enhanced durability. We feature exact fitment and calibration for each vehicle, which assists engine efficiency and fuel mileage. Our sensors are 100% air flow tested to meet exac
Precision manufactured and assembled sensing elements for accurate air flow measurements

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$128.99

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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$236.35

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

from

$129.99

Includes two expansion cones
Includes two resizing tools
Includes one seal installation collet
Includes hard case
Includes instruction manual

Top-Rated Fuel and Emissions Systems Brands For Your 2021 Honda Accord

Shop for the best-rated brands offering Fuel and Emissions Systems and other products for your 2021 Honda Accords. Below you’ll find some of our best rated Fuel and Emissions Systems from Spectra Premium, and more. Fuel and Emissions Systems from these brands that fit a 2021 Accord start at just $76.99 and are rated as high as 4.3 stars. OEM and aftermarket Fuel and Emissions Systems don’t get more top quality, durable, and affordable than from the brands below.

Popular Spectra Premium 2021 Honda Accord Fuel and Emissions Systems

When it comes to maintaining or upgrading your 2021 Honda Accord, using quality Fuel and Emissions Systems is essential to ensure durability and a perfect fit. Spectra Premium ticks all of those boxes. We offer a wide selection of Spectra Premium Fuel and Emissions Systems, specifically designed for the 2021 Honda Accord. With over 1 Spectra Premium brand Fuel and Emissions Systems in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $76.99. Plus, with over 4 customer reviews and an average rating of 4.3 stars, you can trust that our Spectra Premium Fuel and Emissions Systems will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

from $76.99

(4)

Mass Air Flow Sensor

“Did the free code check at the store, when auto repair stores want $80 to, ordered the part online for 1/2 the price of getting through dealer, arrive”

FAQs for 2021 Honda Accord Fuel and Emissions Systems

Which Fuel and Emissions Systems are best-sellers for 2021 Honda Accords?

Out of 21 Fuel and Emissions Systems that fit 2021 Honda Accords, the following parts are the top sellers:

Fuel Tank Cleaning Kit (11692237) – $12.49
Mass Air Flow Sensor (MAF) – 100% NEW (11887153) – $61.99
Manifold Absolute Pressure Sensor (MAP) (12450546) – $76.99

What’s the price range for 2021 Honda Accord Fuel and Emissions Systems?

Fuel and Emissions System prices for the 2021 Honda Accord start at $6.79 and go up to $597.99 for the most premium parts.

What’s the average price of a Fuel and Emissions System for a 2021 Honda Accord?

The average price for Fuel and Emissions Systems for the 2021 Honda Accord is $102.14. 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 Honda Accord model years?

Yes, we currently carry Fuel and Emissions Systems for 47 model years of Honda Accords between 1976 and 2024. Fuel and Emissions Systems are bought most frequently for the following model years: 2022, 2020, 2019, 2018, 2017, 2016, 2015, 2014, and 2013.

What are the cheapest Fuel and Emissions Systems for my 2021 Honda Accord?

The cheapest 2021 Honda Accord Fuel and Emissions Systems we carry in stock are:

Fuel Line Retaining Clip (22148123) – $6.79
Exhaust Gas Recirculation (EGR) Valve Gasket (50192367) – $7.99
Exhaust Gas Recirculation (EGR) Cooler Gasket (50192381) – $9.99
Ambient Air Temperature Sensor (12471515) – $9.99
Ambient Air Temperature Sensor (50210100) – $10.99

What types of Fuel and Emissions Systems do you sell for my 2021 Honda Accord?

As of 11/2/25, these are some of the most in-demand types of Fuel and Emissions Systems for a 2021 Honda Accord:

Can I get help with 2021 Honda Accord 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 Honda Fuel and Emissions Systems and more.

What is your return policy for Honda Accord Fuel and Emissions Systems?

Advance Auto Parts keeps returns simple. For new Honda Accord 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.

2021 Honda Accord Fuel and Emissions Systems

DENSO – Oxygen Sensor: 4 Wire, 20.28" Long, Heated, Exact Fit (Part No.234-4621)

NTK – Switching Oxygen Sensor: 4 Wire, 21.25" Long, Heated, Direct Fit (Part No.24414)

Dorman – Evaporative Emissions Canister Vent Valve (Part No.911-422)

Dorman – Evaporative Emissions Canister Vent Valve (Part No.911-710)

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

Spectra Premium – Mass Air Flow Sensor (Part No.MA190)

Carquest Premium – Mass Air Flow Sensor (MAF) – 100% NEW (Part No.MQ6220)

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

Carquest Premium – Vapor Canister Purge Solenoid: Includes Mounting Hardware (Part No.CPC1173)

Carquest Premium – Vapor Canister Purge Solenoid: Includes Mounting Hardware (Part No.CPC1638)

Dorman – Ambient Air Temperature Sensor (Part No.902-038)

Dorman – Ambient Air Temperature Sensor (Part No.902-037)

Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA1458)

Carquest Premium – Manifold Absolute Pressure Sensor (MAP) (Part No.ECE1041)

Carquest Premium – Manifold Absolute Pressure Sensor (MAP) (Part No.ECE1105)

Carquest Premium – Manifold Absolute Pressure Sensor (MAP) (Part No.ECE1133)

DENSO – Wideband Oxygen Sensor: Upstream, 4 Wire, 16.14" Long, Heated, Exact Fit (Part No.234-9040)

DENSO – Wideband Oxygen Sensor: Upstream, 5 Wire, 10.51" Long, Heated, Exact Fit (Part No.234-5056)

DENSO – Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 16.14" (Part No.234-5726)

Dorman – Fuel Line Retaining Clip (Part No.800-045)

Felpro – Exhaust Gas Recirculation (EGR) Cooler Gasket (Part No.73525)

Carquest Premium – Exhaust Gas Recirculation (EGR) Valve Gasket (Part No.EVA1004)

Felpro – Exhaust Gas Recirculation (EGR) Valve Gasket (Part No.71217)

Felpro – Exhaust Gas Recirculation (EGR) Valve Gasket (Part No.73524)

Carquest Premium – Vapor Canister Shut-Off Valve (Part No.CPC1366)

Carquest Premium – Vapor Canister Shut-Off Valve: Includes Mounting Hardware (Part No.CPC1033)

Dorman – Evaporative Emissions Canister Vent Valve (Part No.911-752)

Carquest Premium – Vapor Canister Shut-Off Valve (Part No.CPC1329)

DENSO – Oxygen Sensor: 4 Wire, Direct Fit, Heated, Wire Length: 15.55" (Part No.234-8046)

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

Dorman – Evaporative Emissions Canister Vent Valve (Part No.911-422)

Carquest Premium – Vapor Canister Shut-Off Valve (Part No.CPC1366)

Carquest Premium – Vapor Canister Shut-Off Valve (Part No.CPC1329)

Carquest Premium – Manifold Absolute Pressure Sensor (MAP) (Part No.ECE1133)

DENSO – Manifold Absolute Pressure Sensor (Part No.198-2002)

DENSO – Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 10.04" (Part No.234-5725)

DENSO – Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 16.14" (Part No.234-5726)

Dorman – Ambient Air Temperature Sensor (Part No.902-038)

Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA1458)

Spectra Premium – Mass Air Flow Sensor (Part No.MA190)

Carquest Premium – Mass Air Flow Sensor (MAF) – 100% NEW (Part No.MQ6220)

Hitachi – Air Flow Sensor – New Actual OE Part (Part No.MAF0122)

Delphi – Mass Air Flow Sensor (Part No.AF10145)

Delphi – Mass Air Flow Sensor (Part No.AF10674)

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