2021 Acura RDX Fuel and Emissions Systems
Find Your Specific 2021 Acura RDX Fuel and Emissions Systems
Below you will find various in-demand Acura Fuel and Emissions Systems, components and accessories for your 2021 RDX. Advance Auto Parts has popular RDX parts like Oxygen Sensors, Fuel Tanks, Fuel Injectors and more. You’ll also find aftermarket and OEM Fuel and Emissions Systems for other RDX model years including
2014,
2015,
2016,
2017,
2018,
2019,
2020,
2022,
2023 and more. Select a category of 2021 Acura RDX Fuel and Emissions Systems below and start saving instantly.
Popular 2021 Acura RDX Fuel and Emissions Systems Categories
Essential Fuel and Emissions Systems for 2021 Acura RDXes
Delphi – Fuel Tank Cleaning Kit (Part No.FC01)
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:
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Product Features:
- Helps avoid premature fuel pump failure
- Lint free towel included
- Low suds formulation
- Removes harmful contaminants from the fuel tank
Hitachi – Air Flow Sensor – New Actual OE Part (Part No.MAF0122)
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:
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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
Carquest Premium – Mass Air Flow Sensor (MAF) – 100% NEW (Part No.MQ6220)
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.
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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
Cardone – Remanufactured Mass Air Flow Sensor (Part No.74-50047)
from
$68.99
CARDONE Remanufactured Mass Air Flow Sensors (MAFS) precisely track O.E. output curves and maintain specific tolerances to ensure accurate scan tool readings for proper operation. 100 percent re-soldering of critical components ensures superior electrical connections, eliminates intermittent failures and lengthens product life. With CARDONE Mass Air Flow Sensors (MAFS), you can expect smooth vehicle performance.
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Product Features:
- 100 percent re-solder of critical components ensures superior electrical connections, no intermittent failures and longer product life.
- On-car vehicle validation routines ensure that modules meet all form, fit, durability and performance requirements.
- All modules are 100 percent tested with automated computer test equipment to ensure full functionality and reliability.
- Our sensors precisely track O.E. output curves and maintain spec tolerances to ensure accurate feedback to the vehicle’s engine control management system.
- Components are rated to handle demanding temperature variations for optimum reliability in every environment.
- As a remanufactured Original Equipment part, this unit guarantees a perfect vehicle fit.
- Our remanufacturing process is earth-friendly, as it reduces the energy and raw material needed to make a new part by 80 percent.
Spectra Premium – Mass Air Flow Sensor (Part No.MA190)
from
$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.
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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
Hitachi – Air Flow Sensor – New Actual OE Part (Part No.MAF0033)
from
$89.99
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:
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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
DENSO – Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 16.14" (Part No.234-5726)
from
$225.99
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.
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DENSO – Wideband Oxygen Sensor: Upstream, 4 Wire, 13.31" Long, Heated, Exact Fit (Part No.234-9061)
from
$177.99
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:
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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
DENSO – Wideband Oxygen Sensor: Upstream, 5 Wire, 10.51" Long, Heated, Exact Fit (Part No.234-5056)
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:
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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
NTK – Wideband Oxygen Sensor: Air-Fuel Ratio 5 Wire, 10.5" Long, Heated, Direct Fit (Part No.24372)
from
$167.99
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. 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, 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:
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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
Carquest Premium – Vapor Canister Shut-Off Valve (Part No.CPC1366)
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.
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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
Carquest Premium – Vapor Canister Shut-Off Valve (Part No.CPC1329)
from
$103.99
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:
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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
Dorman – Evaporative Emissions Canister Vent Valve (Part No.911-422)
from
$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:
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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
DENSO – Oxygen Sensor: Downstream, 4 Wire, 9.45" Long, Heated, Exact Fit (Part No.234-4781)
from
$87.99
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:
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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
Bosch – Oxygen Sensor: 4 Wire, 19.09" Long, Heated, Exact Fit (Part No.13715)
from
$49.99
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:
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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
NTK – Switching Oxygen Sensor: 4 Wire, 21.75" Long, Heated, Direct Fit (Part No.24435)
from
$109.99
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:
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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
Bosch – Wideband Oxygen Sensor: 4 Wire, 13.07" Long, Heated, Exact Fit (Part No.18050)
from
$98.99
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:
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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
- Recommend to use OTC 6500 Flexihead O2 Sensor Wrench
NTK – Switching Oxygen Sensor: 4 Wire, 21.25" Long, Heated, Direct Fit (Part No.24475)
from
$83.99
NGK is the sensor specialist for import and domestic applications. Established under the NGK product family, oxygen sensors are part of our ongoing commitment to streamlining product types and increasing coverage. A ceramic company at our core, uses cutting-edge technology to control the ceramic used in our oxygen sensors from raw material to finished product. is the world’s largest supplier and manufacturer of OE oxygen sensors. Combining expertise and innovation, oxygen sensors deliver superior fit, form, and function. oxygen sensors undergo extensive testing during manufacturing to ensure quality and reliability that meets or exceeds OE specifications. As new vehicles incorporate connected and automated technologies, trust The Sensor Specialist for comprehensive market support and OE application technology.
Product Features:
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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
Bosch – Oxygen Sensor: 4 Wire, 22.32" Long, Heated, Exact Fit (Part No.18031)
from
$119.99
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:
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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
- Recommend to use OTC 6500 Flexihead O2 Sensor Wrench
DENSO – Oxygen Sensor: Downstream, 4 Wire, 21.50" Long, Heated, Exact Fit (Part No.234-4351)
from
$95.99
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:
See More
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
Bosch – Wideband Oxygen Sensor: 4 Wire, 13.78" Long, Heated, Exact Fit (Part No.18064)
from
$283.99
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:
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Product Features:
- Advanced Wideband sensing element for exact air/fuel measurement
- Robust sensor design increases sensor longevity
- Seared protection tube due to 100% functional quality test
- True Direct-fit OE connectors and harness
- Recommend to use OTC 6500 Flexihead O2 Sensor Wrench
NTK – Switching Oxygen Sensor: 4 Wire, 11.75" Long, Heated, Direct Fit (Part No.24461)
from
$92.99
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:
See More
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
Bosch – Oxygen Sensor: 4 Wire, 25.87" Long, Heated, Universal (Part No.15741)
from
$72.99
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:
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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
DENSO – Oxygen Sensor: Downstream, 4 Wire, 13.70" Long, Heated, Exact Fit (Part No.234-4574)
from
$109.99
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:
See More
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
DENSO – Oxygen Sensor: Downstream, 4 Wire, 24.96" Long, Heated, Exact Fit (Part No.234-4461)
from
$107.99
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:
See More
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
Bosch – Oxygen Sensor: 4 Wire, 23.43" Long, Heated, Exact Fit (Part No.18048)
from
$111.99
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:
See More
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
- Recommend to use OTC 6500 Flexihead O2 Sensor Wrench
Upgrade your 2021 Acura RDX with Top-Quality Fuel and Emissions Systems
When it comes to maintaining or upgrading your 2021 Acura RDX, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Acura or enhancing its overall performance, Fuel and Emissions Systems are key to keeping your RDX functioning at its best. At Advance Auto Parts, we offer a wide selection of 6 Fuel and Emissions Systems for the 2021 Acura RDX, 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 Acura RDX at great prices.
Our Fuel and Emissions Systems inventory for this model
ranges from just $12.49 to $255.99, with
an average price of $153.47.
Our 6 Fuel and Emissions Systems in stock come from 4 trusted brands, so you’re sure to find the right part for your 2021 Acura RDX 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 Acura RDX is always ready to roll. We’re committed to providing you with everything you need to keep your RDX in top shape, all in one place.
Start shopping confidently below for your 2021 Acura RDX!
Best-Selling Oxygen Sensors for 2021 Acura RDXes
Enhance the driving experience in your Acura with 1 quality Oxygen Sensor components, starting at $255.99.
DENSO – Oxygen Sensor: 4 Wire, Direct Fit, Heated, Wire Length: 15.55" (Part No.234-8046)
from
$255.99
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.
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Most Popular 2021 Acura RDX Fuel Tanks
Customize your Acura with 1 Fuel Tanks products
like Fuel Tank Cleaning Kits, all
priced under $12.49.
Delphi – Fuel Tank Cleaning Kit (Part No.FC01)
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:
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Product Features:
- Helps avoid premature fuel pump failure
- Lint free towel included
- Low suds formulation
- Removes harmful contaminants from the fuel tank
Top Picks for 2021 Acura RDX Fuel Injectors
Upgrade Acura RDXes with top-quality Fuel Injectors parts, including 1 OEM and aftermarket selections for your 2021 model.
Delphi – Mass Air Flow Sensor (Part No.AF10674)
from
$236.35
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:
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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
In-Demand Air Flow Sensors for 2021 Acura RDXes
Select from 1 premium Air Flow Sensors parts for your 2021 Acura RDX.
DENSO – Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 16.14" (Part No.234-5726)
from
$225.99
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.
See More
Most Sold 2021 Acura RDX Vapor Canister Purge Valves
Explore our best-selling Acura parts for the 2021 RDX among 2 OEM and aftermarket options starting from $83.99.
Dorman – Evaporative Emissions Canister Vent Valve (Part No.911-422)
from
$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:
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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
Carquest Premium – Vapor Canister Shut-Off Valve (Part No.CPC1366)
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:
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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
FAQs for 2021 Acura RDX Fuel and Emissions Systems
Which Fuel and Emissions Systems are best-sellers for 2021 Acura RDXes?
Out of 6 Fuel and Emissions Systems that fit 2021 Acura RDXes, the following parts are the top sellers:
- Fuel Tank Cleaning Kit (11692237) – $12.49
- Evaporative Emissions Canister Vent Valve (12141831) – $105.99
- Vapor Canister Shut-Off Valve (12479762) – $83.99
What’s the price range for 2021 Acura RDX Fuel and Emissions Systems?
Fuel and Emissions System prices for the 2021 Acura RDX start at $12.49 and go up to $255.99 for the most premium parts.
What’s the average price of a Fuel and Emissions System for a 2021 Acura RDX?
The average price for Fuel and Emissions Systems for the 2021 Acura RDX is $153.47. 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 Acura RDX model years?
What are the cheapest Fuel and Emissions Systems for my 2021 Acura RDX?
The cheapest 2021 Acura RDX Fuel and Emissions Systems we carry in stock are:
- Fuel Tank Cleaning Kit (11692237) – $12.49
- Vapor Canister Shut-Off Valve (12479762) – $83.99
- Evaporative Emissions Canister Vent Valve (12141831) – $105.99
- Air-Fuel Ratio Sensor 4 Wire, Direct Fit, Heated, Wire Length: 16.14" (50048068) – $225.99
- Mass Air Flow Sensor (50294838) – $236.35
What types of Fuel and Emissions Systems do you sell for my 2021 Acura RDX?
As of 11/2/25, these are some of the most in-demand types of Fuel and Emissions Systems for a 2021 Acura RDX:
Can I get help with 2021 Acura RDX 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 Acura Fuel and Emissions Systems and more.
What is your return policy for Acura RDX Fuel and Emissions Systems?
Advance Auto Parts keeps returns simple. For new Acura RDX 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.
