2007 Subaru WRX Emission Control

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    • (0 reviews)
      # 79744356
      Subaru WRX 2007, 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
      $60.71 - $67.13
    • (0 reviews)
      # 35994389
      Subaru WRX / WRX STI 2458 CC 2007, Wideband Oxygen Sensor by Bosch®. Connector Gender: Female. Location: Upstream. Exact Fit. This sensor utilizes a sophisticated sensing element enabling it to produce a precise output in...
      Detects the exact amount of unburned fuel in the exhaust streamOE connectors and OE-style harness for continuous wire from connector to sensor
      $118.95
    • (0 reviews)
      # 81776470
      Subaru WRX 2007, Oxygen Sensor by Delphi®. Connector Type: Square-4 Blade. Wrench Size: 7/8". As one of the leading suppliers of oxygen sensor technology since 1978, Delphi planar technology is the result of their OE and...
      OE connectors and wire lengths within three inches of OE specificationsResists high temperatures, vibration damage and wire corrosion to protect signal accuracy, and long life
      $59.64 - $181.06
    • (0 reviews)
      # 21071902
      Subaru WRX / WRX STI 2458 CC 2007, Downstream OE Connector Oxygen Sensor by Denso®. Heated. Screw Type. 4 Wires, 21.26" / 54.00 cm Length. Denso's light duty oxygen sensor started to appear on vehicles with the development of fuel...
      Corrosion-resistant stainless steel constructionPTFE filter blocks efficiency-robbing contaminants
      $56.94
    • (0 reviews)
      # 21104205
      Subaru WRX / WRX STI 2458 CC 2007, Upstream OE Connector Air Fuel Ratio Sensor by Denso®. 4 Wires, 30.71" Length. The air/fuel ratio sensor sends information to the engine management computer to makes adjustments based on driving...
      Tarnish-proof platinum electrodes provides longer life and maintains accuracyQuick-response planar zircon element can quickly detect oxygen concentration
      $111.39
    • (0 reviews)
      # 22807966
      Subaru WRX / WRX STI 2458 CC 2007, Downstream Oxygen Sensor by Spectra Premium®. To ensure your vehicle has optimal performance and fuel economy while producing minimal emissions replace a defective O2 sensor with one backed by the...
      Increase vehicle fuel economy and engine performance while decreasing vehicle exhaust emissions100% performance tested to meet vehicle requirements
      $51.83
    • (0 reviews)
      # 8801306
      Subaru WRX STI Base 2007, PCV Valve by Genuine®. Do you hear a humming or growling sound as you drive, or a clicking or clunking noise when cornering? If so, your vehicle may need wheel bearing or drive axle repairs. But before you...
      $24.05
    • (0 reviews)
      # 85013477
      Subaru WRX 2007, 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 your vehicle...
      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
      $313.08 - $356.11
    • (0 reviews)
      # 106171089
      Subaru WRX STI Base 2.5L 2007, Rear Stainless Steel Small Oval Catalytic Converter by Walker®. Location: Rear. Catalytic Converter Substrate Material: Ceramic. CARB Compliant: No. Converter Configuration: Direct Fit. Converter Body...
      Designed to meet your vehicle’s specific emissions requirementsDirect fit replacement
      $85.64
    • (0 reviews)
      # 17575733
      Subaru WRX 2007, ECO II Front Catalytic Converter by Eastern®. Catalytic Series: ECO II. Converter Configuration: Direct Fit. Catalytic Converter Format: Pre-Catalytic Converter. CARB Compliant: No. Catalytic Converter Overall...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $231.04
    • (0 reviews)
      # 100294930
      Subaru WRX 2007, ECO II Front Catalytic Converter by Eastern®. Catalytic Series: ECO II. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. Inlet Diameter: 2.25". Outlet Diameter: 2.25"....
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $56.54
    • (0 reviews)
      # 88860736
      Subaru WRX / WRX STI Base / Limited 2.5L 2007, Standard Rear Catalytic Converter by Eastern®. Catalytic Series: Standard. Converter Configuration: Direct Fit. Catalytic Converter Format: Main Catalytic Converter. Catalytic...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $177.44
    • (0 reviews)
      # 100278286
      Subaru WRX / WRX STI Base / Limited 2.5L 2007, Standard Rear Catalytic Converter by Eastern®. Catalytic Series: Standard. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. Inlet Diameter:...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $46.62
    • (0 reviews)
      # 95034709
      Subaru WRX / WRX STI 2.5L 2007, Catalytic Converter by Bosal®. Converter Configuration: Direct Fit. CARB Compliant: No. If you’re in need of a replacement catalytic converter, you can’t do better than Bosal. They’re a leading...
      Constructed to meet your vehicle’s specific emissions requirementsRadial flow concept allows for an even distribution of the gas flow in the converter for the optimal conversion of harmful gases
      $145.34 - $297.82
    • (0 reviews)
      # 98837081
      Subaru WRX / WRX STI Base 2007, Dual Catch Can Kit by Radium®. Includes: 2x Black Anodized and Laser Engraved Billet Aluminum Catch Cans, 4x Black Anodized -AN Aluminum Adapter Fittings, 4x Black Anodized 90 Degree -AN Hose Ends,...
      $427.45
    • (0 reviews)
      # 22212380
      Subaru WRX STI 2.5L with LEV2 LEV Specification 2007, Direct Fit California OBDII Rear Catalytic Converter by MagnaFlow®. Catalytic Series: OBDII. Catalytic Converter Substrate Material: Ceramic. Converter Body Material: Stainless...
      Increases exhaust flow compared to original factory converterIncreased exhaust flow allows your engine to make more power
      $457.73
    • (0 reviews)
      # 61590408
      Subaru WRX 2.5L 2007, Direct Fit Federal OEM Grade Catalytic Converter by MagnaFlow®. Catalytic Series: OEM Grade. Catalytic Converter Substrate Material: Ceramic. Converter Body Material: Stainless Steel. CARB Compliant: No....
      Reduces harmful emissionsIncreases exhaust flow compared to original factory converter
      $398.76 - $525.78
    • (0 reviews)
      # 85644768
      Subaru WRX / WRX STI Base / Limited 2.5L 2007, Direct Fit Federal OEM Grade Front Catalytic Converter with Header by MagnaFlow®. Catalytic Series: OEM Grade. Catalytic Converter Substrate Material: Ceramic. Converter Body Material:...
      Reduces harmful emissionsIncreases exhaust flow compared to original factory converter
      $583.50
    • (0 reviews)
      # 61590411
      Subaru WRX 2007, Direct Fit Federal Standard Catalytic Converter by MagnaFlow®. Catalytic Series: Standard. Catalytic Converter Substrate Material: Ceramic. Converter Body Material: Stainless Steel. CARB Compliant: No. Converter...
      Converter body manufactured from heavy-duty stainless steelIncreases exhaust flow compared to original factory converter
      $320.31 - $485.43
    • (0 reviews)
      # 45115678
      Subaru WRX / WRX STI 2.5L 2007, Intermotor™ Vapor Canister Purge Solenoid 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
      $91.78
    • (0 reviews)
      # 88047523
      Subaru WRX / WRX STI 2007, Passenger Side EGR Vacuum Solenoid by Genuine®. 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, but before...
      $136.75
    • (0 reviews)
      # 133807284
      Subaru WRX / WRX STI 2.5L 2007, Secondary Air Injection Check Valve by Dorman®. Package Type: Box. The A.I.R. Check Valve is an emission control device that allows air into the exhaust system to help burn pollutants before they...
      Include gaskets and mounting hardware for a complete repairDirect replacement for a proper fit every time
      $184.11
    • (0 reviews)
      # 84938512
      Subaru WRX / WRX STI 2.5L 2007, 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...
      Increases intercooler efficiencyReduces carbon build up
      $382.50
    • (0 reviews)
      # 8922122
      Subaru WRX 2007, Breather Hose by Genuine®. Do you hear a humming or growling sound as you drive, or a clicking or clunking noise when cornering? If so, your vehicle may need wheel bearing or drive axle repairs. But before you...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $30.19 - $42.81
    • (0 reviews)
      # 8806395
      Subaru WRX / WRX STI 2007, Crankcase O-Ring by Genuine®. Aluminium Washer For The Large Plugs On Crankcase. Is your CHECK ENGINE light on? Has your vehicle failed a state emissions test? Your vehicle’s emissions control system is...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $3.24
    • (0 reviews)
      # 18907543
      Subaru WRX / WRX STI 2458 CC 2007, 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...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $3.06
    • (0 reviews)
      # 97164442
      Subaru WRX STI 2007, 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
      $234.56
    • (0 reviews)
      # 24032805
      Subaru WRX STI 2458 CC 2007, Catalytic Converter Gasket by Victor Reinz®, Use 1 per Car. Center. OEM Standard. Material: Multi-Layered Steel. When you’re low on oil, coolant or some other fluid, you may be tempted to just run...
      $18.72
    • (0 reviews)
      # 97164443
      Subaru WRX / WRX STI 2007, Intermotor™ Secondary Air Injection Pump by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $440.47
    • (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
    • (1 review)
      # 139379691
      Universal ECO GM II Universal Fit Catalytic Converter by Eastern®. Catalytic Series: ECO GM II. 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
      $88.68 - $88.78
    • (1 review)
      # 139379692
      Universal ECO GM Universal Fit Catalytic Converter by Eastern®. Catalytic Series: ECO GM. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. CARB Compliant: No. Catalytic Converter Body...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $83.88 - $88.78
    • (1 review)
      # 139379694
      , ECO III Catalytic Converter by Eastern®. Catalytic Series: ECO III. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. Without Inlet Gasket. Without Outlet Gasket. Without Oxygen Sensor...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $82.05 - $100.28
    • (1 review)
      # 139371684
      , ECO III Catalytic Converter by Eastern®. Catalytic Series: ECO III. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. Without Inlet Gasket. Without Outlet Gasket. Keep your exhaust...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $64.90 - $89.96
    • (1 review)
      # 139379693
      Universal ECO II Universal Fit Catalytic Converter by Eastern®. Catalytic Series: ECO II. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. CARB Compliant: No. Without Inlet Gasket....
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $66.16 - $80.86
    • (1 review)
      # 139371685
      Universal ECO II Universal Fit Catalytic Converter by Eastern®. Catalytic Series: ECO II. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. CARB Compliant: No. Without Inlet Gasket....
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $87.35 - $121.58
    • (1 review)
      # 139371686
      Universal ECO II Universal Fit Catalytic Converter by Eastern®. Catalytic Series: ECO II. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. Catalytic Converter Oxygen Sensor Location:...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $69.40 - $72.55
    • (1 review)
      # 139371687
      Universal ECO II Universal Fit Catalytic Converter by Eastern®. Catalytic Series: ECO II. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. CARB Compliant: No. Without Inlet Gasket....
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $66.23 - $87.13
    • (1 review)
      # 139371688
      Universal ECO II Universal Fit Catalytic Converter by Eastern®. Catalytic Series: ECO II. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. Catalytic Converter Oxygen Sensor Location:...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $87.13 - $88.45
    • (1 review)
      # 139371689
      ECO II Catalytic Converter by Eastern®. Catalytic Series: ECO II. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. Without Inlet Gasket. Without Outlet Gasket. Keep your exhaust...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $52.93 - $72.73
    • (1 review)
      # 139371690
      Universal Performance Universal Fit Catalytic Converter by Eastern®. Catalytic Series: Performance. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. CARB Compliant: No. Without Inlet...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $65.65 - $119.05
    • (1 review)
      # 139371691
      Universal Performance Universal Fit Catalytic Converter by Eastern®. Catalytic Series: Performance. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. CARB Compliant: No. Catalytic...
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $87.79 - $116.23
    • (1 review)
      # 139371692
      Universal Standard Universal Fit Catalytic Converter by Eastern®. Catalytic Series: Standard. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. CARB Compliant: No. Without Inlet Gasket....
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $70.86 - $100.94
    • (1 review)
      # 139371706
      Universal Standard Universal Fit Catalytic Converter by Eastern®. Catalytic Series: Standard. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. Inlet Diameter: 3". Outlet Diameter: 3"....
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $64.80 - $64.87
    • (1 review)
      # 139371707
      Standard Catalytic Converter by Eastern®. Catalytic Series: Standard. Converter Configuration: Universal Fit. Catalytic Converter Format: Main Catalytic Converter. CARB Compliant: No. Without Inlet Gasket. Without Outlet Gasket....
      Universal fitConverts harmful engine emissions to less dangerous gases and water vapor
      $42.50 - $56.00
    • (0 reviews)
      # 107663259
      Universal Oxygen Sensor by K&N®. Protect your expensive racing engine and keep it running at peak performance with these Fuel Injection Line Air Filters. They’ll keep the injector nozzle aeration holes from ingesting dirt or...
      $13.93 - $90.99
    • (0 reviews)
      # mpn1589831653
      Harness by Fast®. Includes Wide-Band Sensor and Harness to convert a a Single Sensor Wideband Unit to a Dual Sensor Unit. Also includes weld in O2 bung and a plug for it.
      High quality at an affordable priceExpertly made from premium materials
      $133.16
    • (7 reviews)
      # 152045176
      Universal Aluminum Oil Catch Tank by Weapon-R®. Whether you’re going racing or just want to look like you are, this aluminum tank will dress up your engine compartment.
      Manufactured from Billet 6061 AluminumBillet Aluminum machined fittings
      $59.50 - $128.00
    • (7 reviews)
      # 152045214
      Universal Neo-Ti Aluminum Oil Catch Tank by Weapon-R®. Whether you’re going racing or just want to look like you are, this Neo-Titanium Finish aluminum tank will dress up your engine compartment.
      Manufactured from Billet 6061 AluminumBillet Aluminum machined fittings
      $89.25
    • (1 review)
      # 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 review)
      # 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 review)
      # 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 review)
      # 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...
      $66.24
    • (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
      $107.49 - $111.24
    • (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...
      $99.99




    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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    2007 Subaru WRX Emission Control Reviews

    Average rating:  4.5  4.5 - 2 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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    2007 Subaru WRX Models
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