2012 Subaru WRX Emission Control

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    • Bosch® Premium Oxygen Sensor
      (0 reviews)
      # 35994415
      Subaru WRX 2012, Premium Oxygen Sensor by Bosch®. A worn-out oxygen sensor can cause engine performance problems and shorten the life of the catalytic converter. Tune-up your vehicle with an Oxygen Sensor from Bosch that is...
      Up to 15 % savings in fuel costsReduced CO2 emissions
      $62.58 - $132.11
    • Standard® Intermotor™ PCV Valve
      (0 reviews)
      # 45264098
      Subaru WRX 2012, Intermotor™ PCV Valve by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $13.42 - $14.06
    • NTK® Replacement Oxygen Sensor
      (0 reviews)
      # 22145652
      Subaru WRX 2012, Replacement Oxygen Sensor by NTK®. This product is designed to improve engine efficiency and fuel mileage, while reducing emissions and extending catalyst life. The oxygen sensor is made of premium quality material...
      Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement
      $75.02
    • Denso® Downstream OE Connector Oxygen Sensor
      (0 reviews)
      # 21061381
      Subaru WRX 2458 CC 2012, Downstream OE Connector Oxygen Sensor by Denso®. Heated. 4 Wires. Denso's light duty oxygen sensor started to appear on vehicles with the development of fuel injection systems. The basic job of the sensor...
      Corrosion-resistant stainless steel constructionPTFE filter blocks efficiency-robbing contaminants
      $51.88 - $70.97
    • Standard® Intermotor™ Secondary Air Injection Bypass Valve
      (0 reviews)
      # 63130527
      Subaru WRX STI 2012, Intermotor™ Secondary Air Injection Bypass Valve by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $227.46
    • Bosch® Universal Fit Oxygen Sensor
      (0 reviews)
      # 24180547
      Subaru WRX 2458 CC 2012, Universal Fit Oxygen Sensor by Bosch®. Properly functioning oxygen sensors are important when it comes to your vehicle's fuel efficiency and reducing harmful exhaust emissions. That's why checking for, and...
      Up to 15 % savings in fuel costsReduced CO2 emissions
      $40.94
    • Dorman® Engine Oil Separator Cover
      (0 reviews)
      # 62427348
      Subaru WRX / WRX STI 2012, Engine Engine Oil Separator Cover by Dorman®, 1 Piece. This is an aftermarket part that replaces factory OE # 11831-AA080, 11831-AA150, 11831AA210. Material: Steel. Packaging Type: Box. Includes: with 1...
      Oil- and heat- resistantDirect replacement for a proper fit
      $22.92
    • Fel-Pro® EGR Valve Gasket
      (0 reviews)
      # 40583540
      Subaru WRX 2458 CC 2012, EGR Valve Gasket by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources, the gaskets...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $3.22
    • Accel® Gen VII™Linear Oxygen Sensor
      (0 reviews)
      # 12710299
      Universal Gen VII™Linear Oxygen Sensor by Accel®. No matter what vehicle you own, its ignition system is what helps to achieve the mileage and power you bought it for. Quality ignition system components are a sure way to let your...
      The finest quality at a great priceImproves your engine's performance
      $87.54 - $1,159.73
    • BTP® PCV Valve
      (0 reviews)
      # 66960259
      Universal PCV Valve by BTP®. Designed utilizing the latest technology, this product delivers the performance you've been looking for. With this second-to-none part by BTP you will keep emission control system in your vehicle...
      Designed for better performance of your emission control systemRight for your vehicle and lifestyle
      $19.89
    • BTP® Evacuation System
      (0 reviews)
      # 66967865
      Universal Evacuation System by BTP®. Designed utilizing the latest technology, this product delivers the performance you've been looking for. With this second-to-none part by BTP you will keep emission control system in your...
      Designed for better performance of your emission control systemRight for your vehicle and lifestyle
      $4.87 - $34.75
    • BTP® Smog PCV Tube
      (0 reviews)
      # 66967993
      Universal Smog PCV Tube by BTP®. Designed utilizing the latest technology, this product delivers the performance you've been looking for. With this second-to-none part by BTP you will keep emission control system in your vehicle...
      Designed for better performance of your emission control systemRight for your vehicle and lifestyle
      $1.51 - $2.13
    • BTP® Grommet
      (0 reviews)
      # 69343097
      Universal Grommet by BTP®. Designed utilizing the latest technology, this product delivers the performance you've been looking for. With this second-to-none part by BTP you will keep emission control system in your vehicle working...
      Designed for better performance of your emission control systemRight for your vehicle and lifestyle
      $0.62 - $0.66
    • Nippon Reinz® Crankcase O-Ring
      (0 reviews)
      # 8719132
      Subaru WRX / WRX STI 2458 CC 2012, Crankcase O-Ring by Nippon Reinz®. Between Crankcase Halves - 19.2 x 2.4mm O-Ring. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE...
      $3.48
    • Walker Products Inc.® OE Connector Oxygen Sensor
      (0 reviews)
      # 8739945
      Subaru WRX 2012, OE Connector Oxygen Sensor by Walker Products Inc.®. Position: Rear. Is your CHECK ENGINE light on? Has your vehicle failed a state emissions test? Your vehicle’s emissions control system is in need of repair,...
      $90.89 - $99.03
    • Powerbuilt® Oxygen Sensor Socket Kit
      (0 reviews)
      # 16795834
      Oxygen Sensor Socket Kit - Kit #51 by Powerbuilt®. For removing and installing oxygen sensor sockets. Special cut-out design on sockets prevents damage to wire leads.
      Made with precision and quality in mindDesigned to meet your specific needs
      $21.50
    • Powerbuilt® Master Sensor Socket Kit
      (0 reviews)
      # 16795870
      Master Sensor Socket Kit - 7 Pc by Powerbuilt®. Sven piece Master Sensor Socket Kit removes and installs oxygen sensors, oil pressure sending units and vacuum switches equipped with wires or vacuum tubes. The kit includes single...
      Made with precision and quality in mindDesigned to meet your specific needs
      $35.38
    • Genuine® Breather Hose
      (0 reviews)
      # 44711936
      Subaru WRX 2012, Breather Hose by Genuine®. Position: Left. Note: Cylinder Head to P.C.V. Pipe. If you have a dirty air filter, clogged PCV valve, or defective MAF sensor you may be tempted to just run down to the local auto parts...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $17.63
    • Denso® Upstream OE Connector Air Fuel Ratio Sensor
      (0 reviews)
      # 21104234
      Subaru WRX 2458 CC 2012, Upstream OE Connector Air Fuel Ratio Sensor by Denso®. 4 Wires. The air/fuel ratio sensor sends information to the engine management computer to makes adjustments based on driving conditions. This wider...
      Tarnish-proof platinum electrodes provides longer life and maintains accuracyQuick-response planar zircon element can quickly detect oxygen concentration
      $121.56
    • Spectra Premium® Secondary Air Injection Pump Check Valve
      (0 reviews)
      # 48104233
      Subaru WRX / WRX STI 2458 CC 2012, Secondary Air Injection Pump Check Valve by Spectra Premium®. Spectra Premium's Secondary Air Pump Control Valves are engineered, developed and validated by our in-house team of Canadian engineers...
      Direct replacement - OE Fit, Form and FunctionManufactured with high quality aluminum to withstand temperature variations
      $166.45
    • Accel® UEGO Wideband O2 Module
      (0 reviews)
      # 12710251
      Universal UEGO Wideband O2 Module by Accel®. No matter what vehicle you own, its ignition system is what helps to achieve the mileage and power you bought it for. Quality ignition system components are a sure way to let your engine...
      The finest quality at a great priceImproves your engine's performance
      $584.85
    • Powerbuilt® 1/2" Dr. 7/8" (22mm) Oxygen Sensor Socket
      (0 reviews)
      # 16795808
      1/2" Dr. 7/8" (22mm) Oxygen Sensor Socket by Powerbuilt®. For removing and installing oxygen sensor and vacuum switches. Specially designed 7/8" (22mm) socket features slot for wiring connector pigtail or vacuum nipples. 2-1/2"...
      Made with precision and quality in mindDesigned to meet your specific needs
      $6.43
    • Powerbuilt® Specialty Switch Socket Kit
      (0 reviews)
      # 16795844
      Specialty Switch Socket Kit - Kit #62 by Powerbuilt®. For removal and installation of hard to reach oxygen sensors, oil pressure switches, oil pressure sending units and thermal sensor switches.
      Made with precision and quality in mindDesigned to meet your specific needs
      $44.18

    Guides & Articles
    An oxygen sensor (also known as an O2 sensor or Lambda sensor) is a sensor designed to generate a reading based on the content of oxygen in an automotive exhaust system. The sensor itself is made of a ceramic compound with porous-shaped electrodes coated in platinum, surrounded by a protective metal shell casing. O2 sensor casings are threaded, and the entire unit...
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