2015 Subaru WRX Emission Control

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    • (0 reviews)
      # 79741810
      Subaru WRX STI 2015, Premium Oxygen Sensor by Bosch®. Location: Downstream. 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...
      Up to 15 % savings in fuel costsReduced CO2 emissions
      $62.92
    • (0 reviews)
      # 79744364
      Subaru WRX STI 2015, Universal Fit Oxygen Sensor by Bosch®. Location: Downstream. Properly functioning oxygen sensors are important when it comes to your vehicle's fuel efficiency and reducing harmful exhaust emissions. That's why...
      Up to 15 % savings in fuel costsReduced CO2 emissions
      $38.59 - $44.70
    • (0 reviews)
      # 138864017
      Subaru WRX STI 2015, Rear Oxygen Sensor by Walker®. Location: Rear. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job....
      Makes installation quick and easyOptimal OE-style fit and quality
      $92.71
    • (0 reviews)
      # 22131744
      Subaru WRX STI 2015, Downstream Oxygen Sensor by NTK®. OE Replacement. This product is designed to improve engine efficiency and fuel mileage, while reducing emissions and extending catalyst life. The oxygen sensor is made of...
      Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement
      $71.33
    • (0 reviews)
      # 85013527
      Subaru WRX / WRX STI 2015, Air-Oil Separator by Moroso®. With this quality part backed by a great price, you can enjoy your vehicle so much more than you thought was possible. This Moroso part is specifically engineered to make...
      Plumbed into a vehicle's PCV system to capture the excess crankcase vapors, residual oil mist and moisture from reentering the intake tractVehicles from the factory vent these excess crankcase vapors, residual oil mist and moisture right back into the intake manifold which could cause detonation, oil deposits to form in the intake tract including the valves themselves and from lowering the ficiency of the intercooler in intercooler equipped vehicles
      $144.08 - $151.33
    • (0 reviews)
      # 92346364
      Subaru WRX STI 2015, Air Oil Separator Kit by PERRIN Performance®. The PERRIN Performance Air Oil Separator traps oil from the crank case vents before it enters the intake, thus increasing intercooler efficiency and reduces chances...
      Increases intercooler efficiencyReduces carbon build up
      $382.50
    • (0 reviews)
      # 8713112
      Subaru WRX STI 2015, Crankcase O-Ring by Nippon Reinz®. Between Crankcase Halves. Size: 19.2mm (0.75") x 2.4mm (0.09"). Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK...
      $2.70
    • (0 reviews)
      # 97176847
      Subaru WRX 2015, 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
      $15.08 - $16.15
    • (0 reviews)
      # 80951593
      Subaru WRX 2015, Anodized Aluminum Baffled Oil Catch Can by Mishimoto®. The Mishimoto Baffled Oil Catch Can is the most advanced oil catch can on the market. Every turbo system deserves to be complemented by a proper oil catch can...
      40-micron bronze filter blocks oil from depositing in ventilation systemSpecial engineered inlet pattern "turbulates" air longer, allowing oil to condense
      $393.75
    • (0 reviews)
      # mpn358583092
      Universal, Air-Oil Separator PCV Delete Kit by Moroso®. With this quality part backed by a great price, you can enjoy your vehicle so much more than you thought was possible. This Moroso part is specifically engineered to make your...
      $98.86
    • (0 reviews)
      # mpn2028122694
      Universal ECO III Universal Fit Center Catalytic Converter by Eastern®. Catalytic Series: ECO III. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. Catalytic Converter Oxygen Sensor...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $86.15
    • (1 reviews)
      # 107662222
      Universal Clamp On Crankcase Vent Filter by K&N®. Designed utilizing the latest technology, this Crankcase Vent Filter by K&N features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $19.69 - $23.35
    • (1 reviews)
      # 107662290
      Universal Push On Crankcase Vent Filter by K&N®. Designed utilizing the latest technology, this Crankcase Vent Filter by K&N features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $9.42 - $92.99
    • (0 reviews)
      # mpn753352631
      Universal Crankcase 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...
      Designed for better performance of your emission control systemRight for your vehicle and lifestyle
      $34.74
    • (1 reviews)
      # mpn753352945
      Universal Polished Aluminum PCV Valve by BTP®. 3/4" O.D. Neck. 3/8" Tube. 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...
      Designed for better performance of your emission control systemRight for your vehicle and lifestyle
      $20.07
    • (0 reviews)
      # 118615091
      Universal Oil Catch Can by Vibrant Performance®. Vibrant Performance offers the most versatile Universal Catch Cans on the market. Made entirely from T6061 Aluminum, it is suitable for various types of service: Oil, Fluid (i.e....
      Top End Cap is pressure fitEach End Cap also features a port tapped for 3/4” NPT fittings, perfect for running a breather filter off your Catch Can
      $102.38
    • (0 reviews)
      # 118569120
      Universal Round Straight Breather Air Filter by Spectre Performance®. Filter Material: Non-woven Synthetic. Top Material/Finish: Chrome. Rooted in racing, Spectre Performance designs and builds every product with the same goal in...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $10.86 - $19.03
    • (0 reviews)
      # 118569184
      Universal Clamp-On Style Mini Breather Filter by Spectre Performance®. Flange Inside Diameter: 0.375" (10 mm). Flange Length: 0.75" (19 mm). Height: 1.75" (44 mm). Outside Diameter: 2" (51 mm). Top Material/Finish: Chrome. Top...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $9.80 - $13.73
    • (1 reviews)
      # 107150329
      Universal Magnum Flow Pro Dry S Crank Case Ventilation Air Filter by aFe®. Keep your engine breathing properly and looking good with this crankcase vent breather filter.
      High Flow For Increased PerformanceWashable and reusable
      $25.95 - $46.95
    • (0 reviews)
      # mpn358504772
      Universal Direct Screw-In Breather by Peterson Fluid Systems®. 12 AN male thread to screw directly into the breather bung on Peterson Dry Sump Tanks. Can also be used on engine valve covers as a fill plug/breather, when a -12 AN...
      $76.31
    • (0 reviews)
      # 82368344
      Universal One Way Inline Pop Off Valve by Peterson Fluid Systems®. Breather assembly is installed in line from engine's crankcase. Valve seals engine from air entering engine, but opens in the event of crankcase pressure, allowing...
      Protects the pump in case of catastrophic engine failureMade of high quality Aluminum
      $123.83 - $128.15
    • (0 reviews)
      # mpn358504773
      Universal One Way Pop Off Valve by Peterson Fluid Systems®. With filter and -12 AN Weld Bung. Breather assembly is installed on engine's crankcase in vacuum condition. Valve seals engine from air entering engine, but opens in the...
      $115.19
    • (0 reviews)
      # 82368371
      Universal Remote Breather Can by Peterson Fluid Systems®. Peterson remote breather cans with internal baffeling are excellent when breathing your dry sump tank to atmosphere or running a vacuum system.
      Made of high quality AluminumInternally baffled
      $182.24 - $184.94
    • (0 reviews)
      # mpn358504774
      Universal Vacuum Regulator by Peterson Fluid Systems®. Peterson's new adjustable vacuum regulator is on the leading edge of engine management. It has been proven to regulate crankcase vacuum and hold a steady level through...
      Regulates crankcase vacuumMade of high quality billet Aluminum
      $194.39
    • (5 reviews)
      # 120885931
      Universal Clamp-On Round Straight Breather Filter by AIRAID®. Flange Length: 0.5" (13 mm). Height: 1.5" (38 mm). Quantity: Sold individually. Keep your engine breathing properly and looking good with these crankcase vent filters.
      Washable and reusableBacked by AIRAID's "No Hassle" warranty
      $20.30 - $27.44
    • (5 reviews)
      # 120885920
      Universal Push-On Oval Straight Breather Filter by AIRAID®. Filter Material: Non-woven Synthetic. Flange Length: 0.5" (13 mm). Height: 1.5" (38 mm). Outside Length: 4". Outside Width: 2" (51 mm). Quantity: Sold individually. Keep...
      Washable and reusableBacked by AIRAID's "No Hassle" warranty
      $20.30
    • (5 reviews)
      # 120885994
      Universal Push-On Round Straight Breather Filter by AIRAID®. Flange Inside Diameter: 1.25" (32 mm). Flange Length: 0.5" (13 mm). Height: 1.5" (38 mm). Quantity: Sold individually. Keep your engine breathing properly and looking...
      Washable and reusableBacked by AIRAID's "No Hassle" warranty
      $17.24 - $25.40
    • (5 reviews)
      # 120886015
      Universal Screw-On Round Straight Breather Filter by AIRAID®. Filter Material: Non-woven Synthetic. Flange Inside Diameter: 1.25" (32 mm). Flange Length: 0.5" (13 mm). Height: 1.5" (38 mm). Outside Diameter: 3" (76 mm). Quantity:...
      Washable and reusableBacked by AIRAID's "No Hassle" warranty
      $20.30 - $25.40
    • (1 reviews)
      # 2565187
      Universal Crankcase Air Filter by Green Filter®. Route your crankcase breather into one of these filters to keep dirt and bugs from entering your crankcase. It’s easy to clean, and will soak up some glop that otherwise would wind...
      Cotton element catches oily blow-bySteel mesh resists denting
      $16.79 - $20.99
    • (0 reviews)
      # 117988793
      Universal Engine Valve Cover Breather Filter by R2C Performance®. R2C Performance valve cover breather filters are designed to offer racers the finest crankcase and tank breather technology available today. R2C's breather flange...
      $30.04
    • (0 reviews)
      # 102569577
      Universal Catch Can Kit by Radium®. An oil catch can is essential on a performance vehicle to protect the engine from elevated levels of crankcase blow-by accumulated from aggressive driving. Excess oil saturated air circulating...
      $157.65 - $299.20
    • (0 reviews)
      # 102569584
      Universal Competition Catch Can by Radium®. The Radium Competition Catch Can (CCC) was created to provide motorsports participants with a high quality product that meets the common 1 Quart minimum capacity requirements dictated by...
      $332.45 - $379.95
    • (1 reviews)
      # mpn1055716
      Universal Pro 5 Round Straight Air Filter Breather by Volant®. Flange Inside Diameter: 0.75". Base Outside Diameter: 2". Top Outside Diameter: 2". Height: 1.5". Volant's high performance 5 layer air filters are made of the highest...
      Cleanable and ReusableFive-Layers of protection
      $32.57
    • (0 reviews)
      # 118614769
      Universal GESI® High Output Catalytic Converters by Vibrant Performance®. Vibrant Performance and Global Emissions Systems Inc. (GESi®) have teamed up to supply a series of OBD2 (1996 and newer) high flow Catalytic Converters...
      EPA certified for use on OBD2 vehicles (1996 and newer) in jurisdictionswhere the installation of Universal Catalytic Converters is still permitted
      $335.21 - $448.35
    • (0 reviews)
      # 118614780
      Universal High Output Catalytic Converters by Vibrant Performance®. Vibrant Performance Metal or Ceramic Core Catalytic Converters are made entirely of Stainless Steel and feature a Monolith that is far more durable and capable...
      T304 Stainless Steel ConstructionThese Converters are covered by a 5 year / 50,000 mile warranty
      $75.76 - $109.10
    • (0 reviews)
      # mpn739977875
      Universal High-Flow Catalytic Converter with Metallic Substrate Kit by Pypes®. CARB Compliant: 50 State Legal. Converter Configuration: Universal Fit. Includes: Metallic Substrate Kit. These Mini converters are 409 stainless for...
      409 stainlesss steel construction resists corrosionWith slots and 02 bung
      $141.99
    • (0 reviews)
      # 129719053
      Universal PowerCat Stainless Steel Catalytic Converter by Dynatech®. 1 Piece. The Dynatech PowerCAT catalytic convertor uses the latest technology in catalytic convertor design. Utilizing a Premium Metallic Substrate internal...
      Premium metallic substrateSuperior strength and durability
      $174.99
    • (0 reviews)
      # 136720862
      Universal Bullet Style Stainless Steel Hi-Flow Catalytic Converter by PaceSetter®. Converter Body Material: Stainless Steel. Catalytic Converter Width: 4". Catalytic Converter Body Length: 11". Converter Configuration: Universal...
      Meet EPA and C.A.R.B. requirements (OBDII exc. CA)Larger, more efficient honeycomb catalyst
      $116.86 - $120.01
    • (0 reviews)
      # 136720875
      Universal Monza Metal Core Catalytic Converter by PaceSetter®. CARB Compliant: Yes. Converter Body Material: Stainless Steel. Catalytic Converter Width: 4". Catalytic Converter Body Length: 11". Converter Configuration: Universal...
      20% higher flow than ceramic core convertersFaster "light off" for lower emissions
      $153.97 - $153.98
    • (1 reviews)
      # 82989181
      Universal Car Diesel Catalytic Converter by Thunderbolt®. 4" Round x 11" Long. These superior quality products are carefully engineered to improve exhaust flow and boost power of your vehicle. These Thunderbolt performance exhaust...
      Designed to improve exhaust flowBuilt to enhance the performance of your vehicle
      $79.39
    • (1 reviews)
      # 82989467
      Universal Oval Catalytic Converter by Thunderbolt®. These superior quality products are carefully engineered to improve exhaust flow and boost power of your vehicle. These Thunderbolt performance exhaust products also help your...
      Designed to improve exhaust flowBuilt to enhance the performance of your vehicle
      $39.69 - $76.06
    • (0 reviews)
      # 82989388
      Universal The Spun Formed Catalytic Converter by Thunderbolt®. These superior quality products are carefully engineered to improve exhaust flow and boost power of your vehicle. These Thunderbolt performance exhaust products also...
      Designed to improve exhaust flowBuilt to enhance the performance of your vehicle
      $44.46 - $76.22
    • (0 reviews)
      # 82989593
      Universal Truck Diesel Catalytic Converter by Thunderbolt®. 6" Round x 12" Long. These superior quality products are carefully engineered to improve exhaust flow and boost power of your vehicle. These Thunderbolt performance...
      Designed to improve exhaust flowBuilt to enhance the performance of your vehicle
      $183.83
    • (0 reviews)
      # 129455702
      Universal 304 SS High-Flow Catalytic Converter by Stainless Works®. CARB Compliant: No. Converter Configuration: Universal Fit. This superior product is made from high-grade stainless steel to ensure excellent quality and maximum...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $184.50
    • (0 reviews)
      # mpn458109083
      Universal J-Style Oxygen Sensor Restrictor Fitting by Vibrant Performance®. A standard O2 Sensor threads into the female end of this fitting. Insert one of the three included inserts to restrict exhaust gas flow to the O2 Sensor...
      $33.00
    • (0 reviews)
      # mpn358596199
      Universal Oxygen Sensor Restrictor Fitting by Vibrant Performance®. A standard O2 Sensor threads into the female end of this fitting. Insert one of the three included inserts to restrict exhaust gas flow to the O2 Sensor and retain...
      $20.95
    • (0 reviews)
      # mpn358501228
      Universal O2 Sensor Clamp by Innovate Motorsports®. Patent-pending, venturi-effect, tapped exhaust clamp for obtaining accurate lambda measurements in non-cat autos or other engines.
      $67.44
    • (0 reviews)
      # 98119345
      Universal O2 Sensor Extender by Torque Solution®. On ODB-II vehicles (96+), the ECU has two O2 sensors for diagnostic purposes. The first O2 sensor is located before the Catalytic Converter and is responsible for all the Air/Fuel...
      $29.21
    • (0 reviews)
      # mpn101740739
      Universal Composite Breather Tube by K&N®. Designed utilizing the latest technology, this Breather Tube by K&N features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $43.99
    • (0 reviews)
      # 118614545
      Universal Crankcase Breather Filter with Chrome Cap by Vibrant Performance®. Vibrant Performance These compact filters are perfect for use on engine bays where space is limited.
      Made of High Quality MaterialsAvailable in different sizes
      $7.30
    • (0 reviews)
      # mpn1351319
      Universal Valve Breather Cover 1-1/4" Push-On Chrome by Spectre Performance®. Air Filter Color: White. Filter Material: Foam. Flange Inside Diameter: 1.5" (38 mm). Flange Length: 0.875" (22 mm). Height: 2.5" (64 mm). Outside...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $5.82
    • (0 reviews)
      # 118575369
      Universal Push-In Style Oil Breather Cap by Spectre Performance®. Filter Material: Foam. Rooted in racing, Spectre Performance designs and builds every product with the same goal in mind - the best performance in the market proven...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $5.82 - $25.20
    • (0 reviews)
      # 118575288
      Universal Push-In Style PCV Oil Breather Cap by Spectre Performance®. Rooted in racing, Spectre Performance designs and builds every product with the same goal in mind - the best performance in the market proven on the racetrack!...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $3.49 - $29.58
    • (0 reviews)
      # 118575464
      Universal Twist-In Style Oil Breather Cap by Spectre Performance®. Air Filter Color: White. Filter Material: Foam. Top Material/Finish: Chrome. Top Style: Metal. Rooted in racing, Spectre Performance designs and builds every...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $5.74 - $8.63
    • (0 reviews)
      # 105577379
      Universal Breather Tank by Jaz®.
      $30.04 - $74.87
    • (0 reviews)
      # 105577489
      Universal Mini Breather Tank by Jaz®. 1 Piece. Material: Polyethylene.
      $74.87 - $76.31
    • (0 reviews)
      # 105577495
      Universal Overflow Catch Tank by Jaz®. 1 Piece. Material: Polyethylene.
      $27.56 - $75.93
    • (0 reviews)
      # 105577607
      Universal Recovery Catch Tank by Jaz®. 1 Piece. Material: Polyethylene.
      $28.37
    • (0 reviews)
      # mpn358504768
      Universal 400 Watt Wrap Around Pad with Detachable Cord by Peterson Fluid Systems®. 110 Volt with detachable cord. Use hi-temp RTV to glue to tank or pan. Pre-heating of oil in dry or wet sump systmes is important to ensure good...
      $153.75
    • (0 reviews)
      # 81416483
      Universal Exhaust Gas Temperature Thermocouple by Haltech®.
      $77.50 - $755.20




    Guides & Articles

    • Replacement Emission Control Parts
      Oxygen Sensors - Why Does My Car Have Four, And Can I Replace One Myself?
      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 is designed to screw in until it reaches a half-in, half-out position on the exhaust pipe. Modern oxygen sensors are heated to ensure they reach operating temperature quickly.
    • Ignition Parts
      Auto Parts: Dealer vs. Aftermarket
      The question of whether to buy parts from an automotive dealer vs. ones from aftermarket manufacturers is as age-old as the automobile itself. Below, we'll take a look at things worth considering to help you make a better choice if you're facing that same question. Automobile manufacturers and dealerships always advertise the fact that their parts are "genuine" because they were made by the exact same production facility that made the parts installed on the assembly line.

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    2015 Subaru WRX Emission Control Reviews

    Average rating:  4.5  4.5 - 3 reviews
    4.8 of 5
    Good Purchase
    Recently I have mounted new cat. My purchase has a faultless casing and everything measures up perfectly. That's nice deal for my Dodge, because the sound great. I like the tonality of these high flow catalytic if your looking for high flow cats these are the way to go.
    CPosted by Craig Walters (Louisbourg, NS) /
    Was this review helpful for you? Yes
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    2015 Subaru WRX Models
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