2021 Subaru Outback Fuel and Emissions Systems
Find Your Specific 2021 Subaru Outback Fuel and Emissions Systems
Below you will find various in-demand Subaru Fuel and Emissions Systems, components and accessories for your 2021 Outback. Advance Auto Parts has popular Outback parts like Gas Caps, Fuel Injectors, Air Flow Sensors and more. You’ll also find aftermarket and OEM Fuel and Emissions Systems for other Outback model years including
2014,
2015,
2016,
2017,
2018,
2019,
2020,
2022,
2023 and more. Select a category of 2021 Subaru Outback Fuel and Emissions Systems below and start saving instantly.
Popular 2021 Subaru Outback Fuel and Emissions Systems Categories
Essential Fuel and Emissions Systems for 2021 Subaru Outbacks
DENSO – Mass Air Flow Sensor (Part No.197-6040)
from
$191.99
DENSO’s innovate designs reduces the size and weight which allows for easy installation. Glass film coated sensing elements reduces contamination exposure and improves reliability.
Product Features:
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Product Features:
- OE technology adapted for the aftermarket
- Reduces emissions, increased performance
- Delivers the highest reliability and detection accuracy
DENSO – Mass Air Flow Sensor (Part No.197-7020)
from
$369.99
DENSO’s innovate designs reduces the size and weight which allows for easy installation. Glass film coated sensing elements reduces contamination exposure and improves reliability.
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Carquest Premium – MASS AIR FLOW SENSOR (Part No.MQ6452)
from
$87.99
Carquest Premium mass air flow (MAF) sensors are built to meet the original equipment (OE) specifications for each application. Our MAF sensors are built by a manufacturer that meets IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Carquest Premium mass air flow sensors are 100% new and undergo extensive validation testing to ensure long-lasting performance and reliability.
Product Features:
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Product Features:
- Designed to meet OE specifications for fit, form and function
- 100% new unit with no core charge
- Advanced micro-controlled technology delivers more accurate output in extreme temperatures
- Extensive validation testing to ensure precision output for better performance and reliability
- O-rings or gaskets included where applicable
Motorad – Non-Locking Tethered Fuel Tank Cap (Part No.MGC837T)
from
$28.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
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Product Features:
- Come pre-assembled for quick and easy installation.
- Several fastener options to work with any fuel cap compartment configuration
- Fits vehicles orginally equipped with tether
- Reduces air pollution with proper sealing and venting
- Manufactured from durable, long-life materials
Carquest Premium – Fuel Cap: Round, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10837)
from
$14.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
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Product Features:
- Passes all state and federal emissions tests
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Carquest Premium – Locking Fuel Tank Cap (Part No.10512)
from
$24.99
Product Features:
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- Protects your fuel from theft and vandalism
- Passes all state and federal emissions tests
- Manufactured from durable, long-life materials
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Carquest Premium – EGR Valve (Part No.EGA2575)
from
$235.99
Carquest Premium exhaust gas recirculation (EGR) valves are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Our Carquest Premium EGR valves are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Carquest Premium EGR valves undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium EGR valves are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
Product Features:
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Product Features:
- Designed to meet or exceed OE specifications for fit, form and function
- Precision engineering and robust design to withstand harsh under hood environment
- Gaskets or seals are included if required for installation
- Extensive design validation testing and 100% end-of-line tested
- Where applicable stainless-steel sleeves used over cold rolled sleeves providing smooth EGR pintle operation under all operating conditions.
- Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
Carquest Premium – EGR Valve (Part No.EGC1592)
from
$102.99
Carquest Premium exhaust gas recirculation (EGR) valves are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Our Carquest Premium EGR valves are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Carquest Premium EGR valves undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium EGR valves are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
Product Features:
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Product Features:
- Designed to meet or exceed OE specifications for fit, form and function
- Precision engineering and robust design to withstand harsh under hood environment
- Gaskets or seals are included if required for installation
- Extensive design validation testing and 100% end-of-line tested
- Where applicable stainless-steel sleeves used over cold rolled sleeves providing smooth EGR pintle operation under all operating conditions.
- Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
Carquest Premium – EGR Valve (Part No.EGC2421)
from
$255.99
Carquest Premium exhaust gas recirculation (EGR) valves are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Our Carquest Premium EGR valves are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Carquest Premium EGR valves undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium EGR valves are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
Product Features:
See More
Product Features:
- Designed to meet or exceed OE specifications for fit, form and function
- Precision engineering and robust design to withstand harsh under hood environment
- Gaskets or seals are included if required for installation
- Extensive design validation testing and 100% end-of-line tested
- Where applicable stainless-steel sleeves used over cold rolled sleeves providing smooth EGR pintle operation under all operating conditions.
- Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
DENSO – Oxygen Sensor: Downstream, 4 Wire, 7.56" Long, Heated, Exact Fit (Part No.234-4907)
from
$141.99
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO’s exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.
Product Features:
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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, 17.32" Long, Heated, Exact Fit (Part No.15814)
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
Bosch – Oxygen Sensor: 4 Wire, 24.02" Long, Heated, Universal (Part No.15730)
from
$89.99
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
Carquest Premium – HVAC Sun Sensor (Part No.WTA2244)
from
$158.99
Also known as the Solar Sensor, the Sun Sensor detects the amount of sun exposure in the passenger cabin and operates the automatic climate control system to comfort the vehicle passengers.
Product Features:
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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.
- Where applicable electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
Carquest Premium – Air Charge Temperature Sensor (Part No.ECA1144)
from
$80.99
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:
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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.
Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA1334)
from
$13.99
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:
See More
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.
Felpro – Exhaust Gas Recirculation (EGR) Valve Gasket (Part No.72963)
from
$5.99
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:
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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
Felpro – Exhaust Gas Recirculation (EGR) Valve Gasket (Part No.73452)
from
$2.29
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:
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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
Carquest Premium – Exhaust Gas Recirculation (EGR) Valve Gasket (Part No.EVA1202)
from
$12.99
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:
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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.
Felpro – Exhaust Gas Recirculation (EGR) Valve Gasket (Part No.71218)
from
$4.49
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:
See More
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
Carquest Premium – Exhaust Gas Recirculation (EGR) Valve Gasket (Part No.EVA1151)
from
$8.99
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:
See More
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.
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
Carquest Premium – Fuel Cap Tester Adapter: (Part No.12410)
from
$17.79
Fuel Cap Tester Adaper for use with Stant fuel cap testers. Color coded for easy identification. Made of durable plastic.
Product Features:
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Product Features:
- BAR Certified adapters
- Adapter check’s a fuel cap’s ability to hold pressure.
- Adapters meet EPA standards for recommended fleet coverage.
- Check adapter application chart for specific makes and models
Carquest Premium – Fuel Cap Tester Adapter (Part No.12422)
from
$39.99
Fuel Cap Tester Adaper for use with Stant fuel cap testers. Color coded for easy identification. Made of durable plastic.
Product Features:
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Product Features:
- BAR Certified adapters
- Adapter check’s a fuel cap’s ability to hold pressure.
- Adapters meet EPA standards for recommended fleet coverage.
- Check adapter application chart for specific makes and models
Carquest Premium – Fuel Cap Tester Adapter: (Part No.12427)
from
$34.99
Fuel Cap Tester Adaper for use with Stant fuel cap testers. Color coded for easy identification. Made of durable plastic.
Product Features:
See More
Product Features:
- BAR Certified adapters
- Adapter check’s a fuel cap’s ability to hold pressure.
- Adapters meet EPA standards for recommended fleet coverage.
- Check adapter application chart for specific makes and models
Upgrade your 2021 Subaru Outback with Top-Quality Fuel and Emissions Systems
When it comes to maintaining or upgrading your 2021 Subaru Outback, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Subaru or enhancing its overall performance, Fuel and Emissions Systems are key to keeping your Outback functioning at its best. At Advance Auto Parts, we offer a wide selection of 20 Fuel and Emissions Systems for the 2021 Subaru Outback, designed to meet your needs without breaking the bank.
From
Gas Cap
replacements to
Fuel Injectors
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 Subaru Outback at great prices.
Our Fuel and Emissions Systems inventory for this model
ranges from just $2.29 to $369.99, with
an average price of $62.22.
Our 20 Fuel and Emissions Systems in stock come from 6 trusted brands, so you’re sure to find the right part for your 2021 Subaru Outback 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 Subaru Outback, we stock popular OEM and aftermarket Fuel and Emissions Systems from top names
like Carquest Premium, and more.
Carquest Premium Fuel and Emissions Systems
start at just $9.99 and boast an impressive 4.4 stars average rating from customers.
With 688 customer reviews and counting, our 2021 Subaru Outback 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 Subaru Outback is always ready to roll. We’re committed to providing you with everything you need to keep your Outback in top shape, all in one place.
Start shopping confidently below for your 2021 Subaru Outback!
Best-Selling Gas Caps for 2021 Subaru Outbacks
Enhance the driving experience in your Subaru with 11 quality Gas Cap components, starting at $7.99.
Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17591)
from
$11.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Passes all state and federal emissions tests
- Independently tested for emission control
- Independently tested for emission control
- Protects your fuel from theft and vandalism
- Reduces air pollution with proper sealing and venting
- Manufactured from durable, long-life materials
Carquest Premium – Fuel Cap: Round, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10837)
from
$14.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Passes all state and federal emissions tests
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Carquest Premium – Non-Locking Fuel Tank Cap (Part No.10834)
from
$9.99
Product Features:
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- Reduces air pollution with proper sealing and venting
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Carquest Premium – Gas Cap: Twist On, Reduces Air Pollution, 1 Pack (Part No.10817)
from
$15.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Passes all state and federal emissions tests
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Carquest Premium – Locking Fuel Tank Cap (Part No.10591)
from
$23.99
Product Features:
See More
- Protects your fuel from theft and vandalism
- Protects your fuel from theft and vandalism
- Passes all state and federal emissions tests
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Carquest Premium – Locking Fuel Cap: Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10504)
from
$21.79
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Protects your fuel from theft and vandalism
- Passes all state and federal emissions tests
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Carquest Premium – Locking Fuel Tank Cap (Part No.10507)
from
$22.99
Product Features:
See More
- Protects your fuel from theft and vandalism
- Protects your fuel from theft and vandalism
- Passes all state and federal emissions tests
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17504)
from
$7.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Passes all state and federal emissions tests
- Independently tested for emission control
- Independently tested for emission control
- Protects your fuel from theft and vandalism
- Reduces air pollution with proper sealing and venting
- Manufactured from durable, long-life materials
Motorad – Non-Locking Tethered Fuel Tank Cap (Part No.MGC817T)
from
$24.29
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Come pre-assembled for quick and easy installation.
- Several fastener options to work with any fuel cap compartment configuration
- Fits vehicles orginally equipped with tether
- Reduces air pollution with proper sealing and venting
- Manufactured from durable, long-life materials
Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17507)
from
$11.79
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Passes all state and federal emissions tests
- Independently tested for emission control
- Independently tested for emission control
- Protects your fuel from theft and vandalism
- Reduces air pollution with proper sealing and venting
- Manufactured from durable, long-life materials
Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17505)
from
$10.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.
Product Features:
See More
Product Features:
- Passes all state and federal emissions tests
- Independently tested for emission control
- Independently tested for emission control
- Protects your fuel from theft and vandalism
- Reduces air pollution with proper sealing and venting
- Manufactured from durable, long-life materials
Most Popular 2021 Subaru Outback Fuel Injectors
Customize your Subaru with 1 Fuel Injectors products
like Air Flow Meters and Mass Air, all
priced under $369.99.
DENSO – Mass Air Flow Sensor (Part No.197-7020)
from
$369.99
DENSO’s innovate designs reduces the size and weight which allows for easy installation. Glass film coated sensing elements reduces contamination exposure and improves reliability.
See More
Top Picks for 2021 Subaru Outback Air Flow Sensors
Upgrade Subaru Outbacks with top-quality Air Flow Sensors parts, including 1 OEM and aftermarket selections for your 2021 model.
Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA1334)
from
$13.99
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:
See More
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.
In-Demand Oxygen Sensors for 2021 Subaru Outbacks
Select from 1 premium Oxygen Sensors parts for your 2021 Subaru Outback.
Bosch – OXYGEN SENSOR (Part No.16617)
from
$303.99
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
Most Sold 2021 Subaru Outback Fuel Pumps
Explore our best-selling Subaru parts for the 2021 Outback among 2 OEM and aftermarket options starting from $17.79.
Carquest Premium – Fuel Cap Tester Adapter: (Part No.12427)
from
$34.99
Fuel Cap Tester Adaper for use with Stant fuel cap testers. Color coded for easy identification. Made of durable plastic.
Product Features:
See More
Product Features:
- BAR Certified adapters
- Adapter check’s a fuel cap’s ability to hold pressure.
- Adapters meet EPA standards for recommended fleet coverage.
- Check adapter application chart for specific makes and models
Carquest Premium – Fuel Cap Tester Adapter: (Part No.12410)
from
$17.79
Fuel Cap Tester Adaper for use with Stant fuel cap testers. Color coded for easy identification. Made of durable plastic.
Product Features:
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Product Features:
- BAR Certified adapters
- Adapter check’s a fuel cap’s ability to hold pressure.
- Adapters meet EPA standards for recommended fleet coverage.
- Check adapter application chart for specific makes and models
Top-Rated Fuel and Emissions Systems Brands For Your 2021 Subaru Outback
Shop for the best-rated brands offering Fuel and Emissions Systems and other products for your 2021 Subaru Outbacks. Below you’ll find some of our best rated Fuel and Emissions Systems from Carquest Premium, and more. Fuel and Emissions Systems from these brands that fit a 2021 Outback start at just $9.99 and are rated as high as 4.4 stars. OEM and aftermarket Fuel and Emissions Systems don’t get more top quality, durable, and affordable than from the brands below.
Popular Carquest Premium 2021 Subaru Outback Fuel and Emissions Systems
When it comes to maintaining or upgrading your 2021 Subaru Outback, using quality Fuel and Emissions Systems is essential to ensure durability and a perfect fit. Carquest Premium ticks all of those boxes. We offer a wide selection of Carquest Premium Fuel and Emissions Systems, specifically designed for the 2021 Subaru Outback. With over 3 Carquest 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 $9.99, with an average price of just $12.32. Plus, with over 182 customer reviews and an average rating of 4.4 stars, you can trust that our Carquest 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.
FAQs for 2021 Subaru Outback Fuel and Emissions Systems
Which Fuel and Emissions Systems are best-sellers for 2021 Subaru Outbacks?
Out of 20 Fuel and Emissions Systems that fit 2021 Subaru Outbacks, the following parts are the top sellers:
- Non-Locking Tethered Fuel Tank Cap (12102600) – $24.29
- Fuel Tank Cleaning Kit (11692237) – $12.49
- Locking Fuel Tank Cap (10049299) – $22.99
What’s the price range for 2021 Subaru Outback Fuel and Emissions Systems?
Fuel and Emissions System prices for the 2021 Subaru Outback start at $2.29 and go up to $369.99 for the most premium parts.
What’s the average price of a Fuel and Emissions System for a 2021 Subaru Outback?
The average price for Fuel and Emissions Systems for the 2021 Subaru Outback is $62.22. 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 Subaru Outback model years?
What are the cheapest Fuel and Emissions Systems for my 2021 Subaru Outback?
The cheapest 2021 Subaru Outback Fuel and Emissions Systems we carry in stock are:
- Exhaust Gas Recirculation (EGR) Valve Gasket (50263184) – $2.29
- Exhaust Gas Recirculation (EGR) Valve Gasket (11401896) – $5.99
- Keyed Alike Locking Fuel Cap (10069213) – $7.99
- Non-Locking Fuel Tank Cap (18481525) – $9.99
- Keyed Alike Locking Fuel Cap (10069215) – $10.99
What types of Fuel and Emissions Systems do you sell for my 2021 Subaru Outback?
As of 3/1/26, these are some of the most in-demand types of Fuel and Emissions Systems for a 2021 Subaru Outback:
Can I get help with 2021 Subaru Outback 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 Subaru Fuel and Emissions Systems and more.
What is your return policy for Subaru Outback Fuel and Emissions Systems?
Advance Auto Parts keeps returns simple. For new Subaru Outback 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.
