2015 Subaru WRX STI Fuel and Emissions Systems
Find Your Specific 2015 Subaru WRX STI Fuel and Emissions Systems
Below you will find various in-demand Subaru Fuel and Emissions Systems, components and accessories for your 2015 WRX STI. Advance Auto Parts has popular WRX STI parts like Fuel Pumps, Fuel Injectors, Air Flow Sensors and more. You’ll also find aftermarket and OEM Fuel and Emissions Systems for other WRX STI model years including
2016,
2017,
2018,
2019,
2020,
2021 and more. Select a category of 2015 Subaru WRX STI Fuel and Emissions Systems below and start saving instantly.
Popular 2015 Subaru WRX STI Fuel and Emissions Systems Categories
Essential Fuel and Emissions Systems for 2015 Subaru WRX STIs
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
Walker – Walker Oxygen Sensor (Part No.C5010380795WKR)
from
$134.65
Walker Oxygen Sensors are precision made for outstanding performance and manufactured to meet and exceed all original equipment specification and test requirements.
Product Features:
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Product Features:
- Improved Engine Response and Performance
- Lower Emissions
- Improved Fuel Economy
- Longer Sensor Life
- Meets OEM Specifications Installation Notes: Vehicles equipped with Air Fuel Ratio Sensors may look very similar to the Oxygen Sensor. Please confirm the correct part before ordering and if the connector does not match, do not install
Felpro – Fuel Injector O-Ring Kit (Part No.ES 73204)
from
$12.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust
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
- Unsurpassed quality you can trust
- Validated for fit, form, and function
Original Equipment – Aux. Air Valve Gaske (Part No.B3060946151OEA)
from
$2.54
Aux. Air Valve Gaske
Dorman – Turbo Boost Solenoid (Part No.B4082959876DOR)
from
$51.37
Turbo Boost Solenoid
Ishino – Fuel Inject Cushion Ring (Part No.C1011144317ISH)
from
$2.17
Fuel Inject Cushion Ring
Carquest Premium – Manifold Absolute Pressure Sensor (MAP) (Part No.ECA1502)
from
$272.99
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:
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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.
Felpro – Fuel Injection Throttle Body Mounting Gasket (Part No.61359)
from
$6.79
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust
Product Features:
See More
Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design to ensure a perfect fit
- Engineered and manufactured specifically for the repair environment
- Unsurpassed quality you can trust
- Validated for fit, form, and function
Ishino – Fuel Injector Seal (Part No.C1010260656ISH)
from
$5.81
Fuel Injector Seal
Ishino Stone – Fuel Injector O Ring (Part No.C1012251371ISH)
from
$5.60
Fuel Injector O Ring
Carquest Premium – Reman Multi Port Fuel Injector (Part No.A212-3414)
from
$46.99
CARQUEST’S line of remanufactured OEM fuel injectors are remanufactured using a proven 15 step process at a state-of-the-art remanufacturing facility in the U.S.A. Each injector is 100% tested under multiple operating conditions to ensure each injector meets or exceeds OE specifications for flow rate, spray pattern, coil resistance, form, fit and function. Each injector includes new external seals and O-rings.
Product Features:
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Product Features:
- Each unit is 100% tested to OE specifications
- Includes new O-rings and seals made of premium OE quality materials
- Includes application specific technical bulletin, where applicable
Original Equipment – Fuel Injector: Exact OE Fit, OE Performance, Reduced Emissions (Part No.C1000194564OEA)
from
$114.46
The Original Equipment brand is the same OEM quality and performance of the original equipment it replaces and is supplied in a plain box, with the car manufacturer’s logo on the part. Original Equipment fuel injectors are manufactured to OE requirements that meet federal emissions and fuel economy standards, and provide exact OE fit for ease of installation.
Product Features:
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Product Features:
- Original Equipment Manufacturer
- Premium internal components
- OE Calibrated impedance
- Fine atomized spray reduces emissions
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
NTK – Wideband Oxygen Sensor: Air-Fuel Ratio 4 Wire, 31.5" Long, Heated, Direct Fit (Part No.24821)
from
$195.99
NTK is the world’s largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle’s on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. While conventional switching oxygen sensors only switch rich or lean, wideband oxygen (or Air-Fuel Ratio) sensors produce a linear output signal that allows the ECU determine exactly how rich or lean an engine is running and make continuous and precise adjustments of the air-fuel mixture to stay closest to stoichiometric, providing the best possible combustion and fewest emissions. A ceramics company at our core, NTK uses state-of-the art technology enabling complete control of the ceramics used in our wideband oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.
Product Features:
See More
Product Features:
- OEM QUALITY: NTK is the world’s largest supplier of original equipment oxygen sensors with renowned quality that meets or exceeds OEM specifications
- PRODUCT ENGINEERING: Based on OE expertise, but specifically engineered for the aftermarket, NTK Oxygen Sensors offer superior OE fit, form, function
- OE TECHNOLOGY: Upgraded to the latest OE technologies, NTK Oxygen Sensors are designed to reduce OE failures, enhance durability and performance
- EXTENSIVE TESTING: OE development includes vibration and thermal shock testing. Testing during manufacturing guarantees quality and reliability
- EASY INSTALLATION: NTK Oxygen Sensors are equipped with OE specified, water-resistant connectors and harness accessory hardware for easy installation
- ADVANCED CERAMIC SENSOR ELEMENT: 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects against element poisoning
- NTK ADVANTAGE: Superior dual-coated platinum interface and thinner ceramic element produces fastest light off and response times with best durability
DENSO – Wideband Oxygen Sensor: Upstream, 4 Wire, 31.06" Long, Heated, Exact Fit (Part No.234-9034)
from
$199.99
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:
See More
Product Features:
- Specifically designed to meet the increasing demands of today’s engines
- 100% checked for high temperature signal output, air tightness, continuity, and heat resistance for optimal efficiency and performance
- Coated with aluminum oxide to prevent silicone and lead from contacting the ceramic element and damaging the platinum electrode
- Double protection cover helps maintain proper unit temperature for quicker response times, which is critical to your vehicle’s fuel efficiency
- Manufactured with a rugged stainless steel housing and porous PTFE filter to resist corrosion and contamination
Delphi – Mass Air Flow Sensor (Part No.AF10345)
from
$191.99
100% new; Delphi OE Technology Validated to match the vehicle applications; Manufactured to meet or exceed OE requirements.
Product Features:
See 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
DENSO – First Time Fit Air Mass Sensor (Part No.B3150289033ND)
from
$219.34
Denso manufactures an air mass sensor that is engineered to exact OEM specifications for quality, fit and performance. The Denso Air Mass Sensor provides exceptional reliability by incorporating a platinum coated sensing element with a glass film to protect the sensor from contaminants. Denso prevents errors caused by air pulsations produced in the intake air pipe by integrating the control circuit within the top of the air flow sensor so that only the small bypass passage structure with the sensing element is inserted into the intake air pipe, resulting in higher detection accuracy and performance.
Product Features:
See More
Product Features:
- OEM Quality Direct fit Application
- Platinum coated sensing element
- Meets or exceeds OEM specifications
- Utilizes the factory style mounts, connectors and fittings
- Provides exceptional reliability
Carquest Premium – Mass Air Flow Sensor (MAF) – 100% NEW (Part No.MQ6398)
from
$90.99
CARQUEST MAF sensors are 100% new and are produced by a certified OEM supplier that designs and manufactures new mass air flow sensors
Product Features:
See More
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
Felpro – EGR MOUNTING SET (Part No.73451)
from
$4.79
EGR MOUNTING SET
Original Equipment – EGR Tube Gasket (Part No.B7018946152OEA)
from
$2.65
EGR Tube Gasket
Felpro – Exhaust Gas Recirculation (EGR) Valve Gasket (Part No.71218)
from
$3.49
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust
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
Felpro – O-RING (Part No.71857)
from
$3.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust
Product Features:
See More
Product Features:
- Meets or exceeds all original equipment specifications
- Design to ensure a perfect fit
- Engineered and manufactured specifically for the repair environment
- Unsurpassed quality you can trust
- Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
Motorad – Tethered Gas Cap: Non-Locking, Original Equipment Manufacturer, Reduces Air Pollution, 1 Pack (Part No.MGC817T)
from
$23.99
Experience uncompromising quality and emissions compliance with these tethered fuel caps. Manufactured with top-tier materials and rigorous production and safety standards adhering to Original Equipment Manufacturer guidelines. Designed meticulously to meet both state and federal emissions requirements, it ensures environmental responsibility. With its specifically engineered pressure and vacuum relief valves, fuel evaporation becomes a thing of the past. Bid farewell to the risk of losing up to 30 gallons of precious gasoline over a year due to a leaking fuel cap. Trust in our superior construction to safeguard your fuel and contribute to a greener future.
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Carquest Premium – Gas Cap: Twist On, Reduces Air Pollution, 1 Pack (Part No.10817)
from
$15.79
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:
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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 – Keyed Alike Locking Fuel Cap (Part No.17504)
from
$6.99
None
Product Features:
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Product Features:
- Protects your fuel from theft and vandalism
- Manufactured from durable, long-life materials
- Independently tested for emission control
- Passes all state and federal emissions tests
- Reduces air pollution with proper sealing and venting
Carquest Premium – Fuel Cap: 10819, Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10819)
from
$16.79
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
- Manufactured from durable, long-life materials
- Reduces air pollution with proper sealing and venting
- Independently tested for emission control
- “Torque Override” feature aids in the proper installation of the fuel cap. It produces an audible click as the O-ring that seals the cap is properly compressed.
Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17591)
from
$11.99
None
Product Features:
See More
Product Features:
- Protects your fuel from theft and vandalism
- Manufactured from durable, long-life materials
- Independently tested for emission control
- Passes all state and federal emissions tests
- Reduces air pollution with proper sealing and venting
Carquest Premium – Locking Fuel Cap: 10504, 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
Upgrade your 2015 Subaru WRX STI with Top-Quality Fuel and Emissions Systems
When it comes to maintaining or upgrading your 2015 Subaru WRX STI, 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 WRX STI functioning at its best. At Advance Auto Parts, we offer a wide selection of 42 Fuel and Emissions Systems for the 2015 Subaru WRX STI, designed to meet your needs without breaking the bank.
From
Fuel Pump
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 2015 Subaru WRX STI at great prices.
Our Fuel and Emissions Systems inventory for this model
ranges from just $2.17 to $1,020.43, with
an average price of $85.06.
Our 42 Fuel and Emissions Systems in stock come from 12 trusted brands, so you’re sure to find the right part for your 2015 Subaru WRX STI 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 2015 Subaru WRX STI, 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 $6.99 and boast an impressive 4 stars average rating from customers.
With 2,202 customer reviews and counting, our 2015 Subaru WRX STI 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 2015 Subaru WRX STI is always ready to roll. We’re committed to providing you with everything you need to keep your WRX STI in top shape, all in one place.
Start shopping confidently below for your 2015 Subaru WRX STI!
Best-Selling Fuel Pumps for 2015 Subaru WRX STIs
Enhance the driving experience in your Subaru with 3 quality Fuel Pump components, starting at $3.99.
Felpro – O-RING (Part No.71857)
from
$3.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust
Product Features:
See More
Product Features:
- Meets or exceeds all original equipment specifications
- Design to ensure a perfect fit
- Engineered and manufactured specifically for the repair environment
- Unsurpassed quality you can trust
- Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
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
$15.99
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
Most Popular 2015 Subaru WRX STI Fuel Injectors
Customize your Subaru with 12 Fuel Injectors products
like Air Flow Meters and Mass Air,
Fuel Injector Gaskets, and
Fuel Injectors, all
priced under $219.34.
DENSO – Mass Air Flow Sensor (Part No.197-6130)
from
$164.99
DENSO’s innovative designs reduces the size and weight which allows for easy installation. Glass film coated sensing elements reduces contamination exposure and improves reliability.
Product Features:
See More
Product Features:
- OE technology adapted for the aftermarket
- Reduces emissions, increased performance
- Delivers the highest reliability and detection accuracy
Felpro – Fuel Injection Throttle Body Mounting Gasket (Part No.61359)
from
$6.79
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust
Product Features:
See More
Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design to ensure a perfect fit
- Engineered and manufactured specifically for the repair environment
- Unsurpassed quality you can trust
- Validated for fit, form, and function
Carquest Premium – Mass Air Flow Sensor (MAF) – 100% NEW (Part No.MQ6398)
from
$90.99
CARQUEST MAF sensors are 100% new and are produced by a certified OEM supplier that designs and manufactures new mass air flow sensors
Product Features:
See More
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
Felpro – Fuel Injector O-Ring Set (Part No.ES 73202)
from
$6.49
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust
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
- Unsurpassed quality you can trust
- Validated for fit, form, and function
DENSO – First Time Fit Air Mass Sensor (Part No.B3150289033ND)
from
$219.34
Denso manufactures an air mass sensor that is engineered to exact OEM specifications for quality, fit and performance. The Denso Air Mass Sensor provides exceptional reliability by incorporating a platinum coated sensing element with a glass film to protect the sensor from contaminants. Denso prevents errors caused by air pulsations produced in the intake air pipe by integrating the control circuit within the top of the air flow sensor so that only the small bypass passage structure with the sensing element is inserted into the intake air pipe, resulting in higher detection accuracy and performance.
Product Features:
See More
Product Features:
- OEM Quality Direct fit Application
- Platinum coated sensing element
- Meets or exceeds OEM specifications
- Utilizes the factory style mounts, connectors and fittings
- Provides exceptional reliability
Carquest Premium – Reman Multi Port Fuel Injector (Part No.A212-3414)
from
$46.99
CARQUEST’S line of remanufactured OEM fuel injectors are remanufactured using a proven 15 step process at a state-of-the-art remanufacturing facility in the U.S.A. Each injector is 100% tested under multiple operating conditions to ensure each injector meets or exceeds OE specifications for flow rate, spray pattern, coil resistance, form, fit and function. Each injector includes new external seals and O-rings.
Product Features:
See More
Product Features:
- Each unit is 100% tested to OE specifications
- Includes new O-rings and seals made of premium OE quality materials
- Includes application specific technical bulletin, where applicable
Delphi – Mass Air Flow Sensor (Part No.AF10345)
from
$191.99
100% new; Delphi OE Technology Validated to match the vehicle applications; Manufactured to meet or exceed OE requirements.
Product Features:
See 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
Original Equipment – Fuel Injector: Exact OE Fit, OE Performance, Reduced Emissions (Part No.C1000194564OEA)
from
$114.46
The Original Equipment brand is the same OEM quality and performance of the original equipment it replaces and is supplied in a plain box, with the car manufacturer’s logo on the part. Original Equipment fuel injectors are manufactured to OE requirements that meet federal emissions and fuel economy standards, and provide exact OE fit for ease of installation.
Product Features:
See More
Product Features:
- Original Equipment Manufacturer
- Premium internal components
- OE Calibrated impedance
- Fine atomized spray reduces emissions
Felpro – Fuel Injector O-Ring Kit (Part No.ES 73204)
from
$12.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust
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
- Unsurpassed quality you can trust
- Validated for fit, form, and function
Ishino – Fuel Injector Seal (Part No.C1010260656ISH)
from
$5.81
Fuel Injector Seal
Ishino Stone – Fuel Injector O Ring (Part No.C1012251371ISH)
from
$5.60
Fuel Injector O Ring
Ishino – Fuel Inject Cushion Ring (Part No.C1011144317ISH)
from
$2.17
Fuel Inject Cushion Ring
Top Picks for 2015 Subaru WRX STI Air Flow Sensors
Upgrade Subaru WRX STIs with top-quality Air Flow Sensors parts, including 3 OEM and aftermarket selections for your 2015 model.
DENSO – Wideband Oxygen Sensor: Upstream, 4 Wire, 31.06" Long, Heated, Exact Fit (Part No.234-9034)
from
$199.99
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:
See More
Product Features:
- Specifically designed to meet the increasing demands of today’s engines
- 100% checked for high temperature signal output, air tightness, continuity, and heat resistance for optimal efficiency and performance
- Coated with aluminum oxide to prevent silicone and lead from contacting the ceramic element and damaging the platinum electrode
- Double protection cover helps maintain proper unit temperature for quicker response times, which is critical to your vehicle’s fuel efficiency
- Manufactured with a rugged stainless steel housing and porous PTFE filter to resist corrosion and contamination
Carquest Premium – Manifold Absolute Pressure Sensor (MAP) (Part No.ECA1502)
from
$272.99
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:
See More
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.
NTK – Wideband Oxygen Sensor: Air-Fuel Ratio 4 Wire, 31.5" Long, Heated, Direct Fit (Part No.24821)
from
$195.99
NTK is the world’s largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle’s on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. While conventional switching oxygen sensors only switch rich or lean, wideband oxygen (or Air-Fuel Ratio) sensors produce a linear output signal that allows the ECU determine exactly how rich or lean an engine is running and make continuous and precise adjustments of the air-fuel mixture to stay closest to stoichiometric, providing the best possible combustion and fewest emissions. A ceramics company at our core, NTK uses state-of-the art technology enabling complete control of the ceramics used in our wideband oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.
Product Features:
See More
Product Features:
- OEM QUALITY: NTK is the world’s largest supplier of original equipment oxygen sensors with renowned quality that meets or exceeds OEM specifications
- PRODUCT ENGINEERING: Based on OE expertise, but specifically engineered for the aftermarket, NTK Oxygen Sensors offer superior OE fit, form, function
- OE TECHNOLOGY: Upgraded to the latest OE technologies, NTK Oxygen Sensors are designed to reduce OE failures, enhance durability and performance
- EXTENSIVE TESTING: OE development includes vibration and thermal shock testing. Testing during manufacturing guarantees quality and reliability
- EASY INSTALLATION: NTK Oxygen Sensors are equipped with OE specified, water-resistant connectors and harness accessory hardware for easy installation
- ADVANCED CERAMIC SENSOR ELEMENT: 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects against element poisoning
- NTK ADVANTAGE: Superior dual-coated platinum interface and thinner ceramic element produces fastest light off and response times with best durability
In-Demand Oxygen Sensors for 2015 Subaru WRX STIs
Select from 5 premium Oxygen Sensors parts for your 2015 Subaru WRX STI, with prices ranging from $61.99 to $264.01.
DENSO – Oxygen Sensor: Downstream, 4 Wire, 21.26" Long, Heated, Exact Fit (Part No.234-4732)
from
$98.99
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled performance. Each component is precision built for exact replacement, and a first time fit. This innovative line features DENSO’s exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity. DENSO gives you the right part and the right fit, the first time.
Product Features:
See More
Product Features:
- Specifically designed to meet the increasing demands of today’s engines
- 100% checked for high temperature signal output, air tightness, continuity, and heat resistance for optimal efficiency and performance
- Coated with aluminum oxide to prevent silicone and lead from contacting the ceramic element and damaging the platinum electrode
- Double protection cover helps maintain proper unit temperature for quicker response times, which is critical to your vehicle’s fuel efficiency
- Manufactured with a rugged stainless steel housing and porous PTFE filter to resist corrosion and contamination
Bosch – Oxygen Sensor: 4 Wire, 25.87" Long, Heated, Universal (Part No.15741)
from
$61.99
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 – First Time Fit Air Fuel Ratio Sensor (Part No.C5015437679ND)
from
$264.01
DENSO a global supplier to automakers manufactures an OE-equivalent direct fit air fuel ratio sensor that maintains the quality and performance of the Original Equipment it replaces. DENSO continues to innovate with the latest development in air fuel ratio sensors. These components, also known as wide-band oxygen sensors, have a broader response range to provide much finer control of air/fuel mixtures over a greater variety of operating conditions.
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- Tarnish-proof platinum electrodes provides longer life and maintains accuracy
- Quick-response planar zirconia element can quickly detect oxygen concentration
- Measures A/F ratios from approximately 12:1 to 19:1
- Increased performance by mapping a/f ratios throughout rpm range
- Reduces emissions by keeping the air-fuel mixture at an optimum ratio
NTK – Switching Oxygen Sensor: 4 Wire, 27.5" Long, Heated, Direct Fit (Part No.24642)
from
$111.99
NTK is the world’s largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle’s on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. Providing constant closed loop feedback to the ECU, oxygen sensors help to control the air-fuel ratio while alerting OBDII systems of possible problems with fuel delivery or catalytic converter efficiency. A ceramics company at our core, NTK uses state-of-the art technology enabling control of the ceramic element used in our oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.
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Product Features:
- OEM QUALITY: NTK is the world’s largest supplier of original equipment oxygen sensors with renowned quality that meets or exceeds OEM specifications
- PRODUCT ENGINEERING: Based on OE expertise, but specifically engineered for the aftermarket, NTK Oxygen Sensors offer superior OE fit, form, function
- OE TECHNOLOGY: Upgraded to the latest OE technologies, NTK Oxygen Sensors are designed to reduce OE failures, enhance durability and performance
- EXTENSIVE TESTING: OE development includes vibration and thermal shock testing. Testing during manufacturing guarantees quality and reliability
- EASY INSTALLATION: NTK Oxygen Sensors are equipped with OE specified, water-resistant connectors and harness accessory hardware for easy installation
- ADVANCED CERAMIC SENSOR ELEMENT: 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects against element poisoning
- NTK ADVANTAGE: Superior dual-coated platinum interface and thinner ceramic element produces fastest light off and response times with best durability
Walker – Walker Oxygen Sensor (Part No.C5010380795WKR)
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$134.65
Walker Oxygen Sensors are precision made for outstanding performance and manufactured to meet and exceed all original equipment specification and test requirements.
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Product Features:
- Improved Engine Response and Performance
- Lower Emissions
- Improved Fuel Economy
- Longer Sensor Life
- Meets OEM Specifications Installation Notes: Vehicles equipped with Air Fuel Ratio Sensors may look very similar to the Oxygen Sensor. Please confirm the correct part before ordering and if the connector does not match, do not install
Most Sold 2015 Subaru WRX STI Gas Caps
Explore our best-selling Subaru parts for the 2015 WRX STI among 12 OEM and aftermarket options starting from $6.99.
Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17591)
from
$11.99
None
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Product Features:
- Protects your fuel from theft and vandalism
- Manufactured from durable, long-life materials
- Independently tested for emission control
- Passes all state and federal emissions tests
- Reduces air pollution with proper sealing and venting
Carquest Premium – Fuel Cap: 10837, 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.
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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 – Fuel Cap: 10834, Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10834)
from
$15.49
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.
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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 – Gas Cap: Twist On, Reduces Air Pollution, 1 Pack (Part No.10817)
from
$15.79
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.
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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 Cap: 10501, Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10501)
from
$24.99
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.
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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 – Fuel Cap: 10819, Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10819)
from
$16.79
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.
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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
- “Torque Override” feature aids in the proper installation of the fuel cap. It produces an audible click as the O-ring that seals the cap is properly compressed.
Carquest Premium – Locking Fuel Cap (Part No.10591)
from
$23.99
None
Product Features:
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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 Cap: 10504, 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.
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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 Cap: 10507, Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10507)
from
$22.99
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.
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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 – Keyed Alike Locking Fuel Cap (Part No.17504)
from
$6.99
None
Product Features:
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Product Features:
- Protects your fuel from theft and vandalism
- Manufactured from durable, long-life materials
- Independently tested for emission control
- Passes all state and federal emissions tests
- Reduces air pollution with proper sealing and venting
Motorad – Tethered Gas Cap: Non-Locking, Original Equipment Manufacturer, Reduces Air Pollution, 1 Pack (Part No.MGC817T)
from
$23.99
Experience uncompromising quality and emissions compliance with these tethered fuel caps. Manufactured with top-tier materials and rigorous production and safety standards adhering to Original Equipment Manufacturer guidelines. Designed meticulously to meet both state and federal emissions requirements, it ensures environmental responsibility. With its specifically engineered pressure and vacuum relief valves, fuel evaporation becomes a thing of the past. Bid farewell to the risk of losing up to 30 gallons of precious gasoline over a year due to a leaking fuel cap. Trust in our superior construction to safeguard your fuel and contribute to a greener future.
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Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17507)
from
$10.99
None
Product Features:
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Product Features:
- Protects your fuel from theft and vandalism
- Manufactured from durable, long-life materials
- Independently tested for emission control
- Passes all state and federal emissions tests
- Reduces air pollution with proper sealing and venting
Top-Rated Fuel and Emissions Systems Brands For Your 2015 Subaru WRX STI
Shop for the best-rated brands offering Fuel and Emissions Systems and other products for your 2015 Subaru WRX STIs. 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 2015 WRX STI start at just $6.99 and are rated as high as 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 2015 Subaru WRX STI Fuel and Emissions Systems
When it comes to maintaining or upgrading your 2015 Subaru WRX STI, 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 2015 Subaru WRX STI. With over 16 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 $6.99, with an average price of just $40.55. Plus, with over 401 customer reviews and an average rating of 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 2015 Subaru WRX STI Fuel and Emissions Systems
Which Fuel and Emissions Systems are best-sellers for 2015 Subaru WRX STIs?
Out of 42 Fuel and Emissions Systems that fit 2015 Subaru WRX STIs, the following parts are the top sellers:
- Fuel Cap: 10837, Round, Direct Fit, Provides Tight Seal, 1 Pack (18481528) – $14.99
- Tethered Gas Cap: Non-Locking, Original Equipment Manufacturer, Reduces Air Pollution, 1 Pack (12102600) – $23.99
- Oxygen Sensor: 4 Wire, 25.87" Long, Heated, Universal (11410320) – $61.99
What’s the price range for 2015 Subaru WRX STI Fuel and Emissions Systems?
Fuel and Emissions System prices for the 2015 Subaru WRX STI start at $2.17 and go up to $1,020.43 for the most premium parts.
What’s the average price of a Fuel and Emissions System for a 2015 Subaru WRX STI?
The average price for Fuel and Emissions Systems for the 2015 Subaru WRX STI is $85.06. 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 WRX STI model years?
What are the cheapest Fuel and Emissions Systems for my 2015 Subaru WRX STI?
The cheapest 2015 Subaru WRX STI Fuel and Emissions Systems we carry in stock are:
- Fuel Inject Cushion Ring (10740434) – $2.17
- Aux. Air Valve Gaske (12052635) – $2.54
- EGR Tube Gasket (12064715) – $2.65
- Exhaust Gas Recirculation (EGR) Valve Gasket (20688239) – $3.49
- O-RING (12005668) – $3.99
What are the top-rated Fuel and Emissions Systems that fit the 2015 Subaru WRX STI?
Out of 2,202 reviews by customers, our 2015 Subaru WRX STI Fuel and Emissions Systems have an average customer rating of . These are some of the highest-rated Fuel and Emissions System types for the 2015 Subaru WRX STI and their top-rated products:
- Oxygen Sensors
- Oxygen Sensor: Downstream, 4 Wire, 21.26" Long, Heated, Exact Fit (20471856) – $98.99
What types of Fuel and Emissions Systems do you sell for my 2015 Subaru WRX STI?
As of 2/5/25, these are some of the most in-demand types of Fuel and Emissions Systems for a 2015 Subaru WRX STI:
Can I get help with 2015 Subaru WRX STI 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 WRX STI Fuel and Emissions Systems?
Advance Auto Parts keeps returns simple. For new Subaru WRX STI 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.
