2003 Subaru WRX Catalytic Converters & Components

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    • Walker® Ultra™ Small Oval Universal Fit Catalytic Converter
      (0 reviews)
      # 17735462
      Subaru WRX with Federal Emission 2003, Ultra™ Small Oval Universal Fit Catalytic Converter by Walker®. Inlet Diameter 1: 2.5". Outlet Diameter: 2.5". Overall Length: 13.25". Body Dimensions: 10" Length x 6.125" Width x 4.25"...
      Emission Warranty: 5 Years / 50,000 Miles (80,000 Kilometers)Structural Warranty: 5 Years / 50,000 Miles (80,000 Kilometers)
      $94.75
    • Bosal® Rear Catalytic Converter
      (0 reviews)
      # 49846359
      Subaru WRX 2003, Rear Catalytic Converter by Bosal®. 30" Overall Length. Includes O2 Sensor Port. If you’re in need of a replacement catalytic converter, you can’t do better than Bosal. They’re a leading supplier to vehicle...
      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
      $228.95
    • DEC® Direct Fit Catalytic Converter
      (0 reviews)
      # 86074997
      Subaru WRX 2003, Direct Fit Catalytic Converter by DEC®. Pick out a catalytic converter by DEC and get your emissions back into check without worrying to fail again. These catalytic converters are made from a heavy duty stainless...
      Direct fitMade from a heavy duty stainless steel outer shell
      $212.40 - $245.00
    • MagnaFlow® Direct Fit Federal OEM Grade Front Catalytic Converter with Header
      (0 reviews)
      # 85644768
      Subaru WRX 2003, Direct Fit Federal OEM Grade Catalytic Converter with Header by MagnaFlow®. 2.5" Inlet / 2" Outlet Diameter. 7.63" Width. Location: Front. Without Air Tube. If your car needs replacement, install one that will get...
      Reduces harmful emissionsIncreases exhaust flow compared to original factory converter
      $583.50
    • MagnaFlow® Direct Fit Federal OEM Grade Rear Catalytic Converter
      (0 reviews)
      # 85644769
      Subaru WRX 2003, Direct Fit Federal OEM Grade Catalytic Converter by MagnaFlow®. 2.5" Inlet / 2.5" Outlet Diameter. 7.63" Width. Location: Rear. Without Air Tube. If your car needs replacement, install one that will get you through...
      Converter body manufactured from heavy-duty stainless steelIncreases exhaust flow compared to original factory converter
      $398.76
    • MagnaFlow® Direct Fit Federal Pre-OBDII Catalytic Converter
      (0 reviews)
      # 61590405
      Subaru WRX 2003, Direct Fit Federal Pre-OBDII Catalytic Converter by MagnaFlow®. 2.5" Inlet / 2.5" Outlet Diameter. 7.63" Width. Without Air Tube. If your car needs replacement, install one that will get you through the smog check...
      Converter body manufactured from heavy-duty stainless steelIncreases exhaust flow compared to original factory converter
      $320.31 - $485.43
    • DC Sports® Polished Stainless Steel Turbo Up-Pipe
      (1 reviews)
      # 11019485
      Subaru WRX 2003, Polished Stainless Steel Turbo Up-Pipe by DC Sports®. DC Sports competition pipes delete the catalytic to eliminate restriction in the exhaust path and are dyno tuned to deliver incredible performance gains for...
      $114.40
    • Flowmaster® 200 Series OBDII Round Catalytic Converter
      (2 reviews)
      # 492248
      Universal 200 Series OBDII Stainless Steel Round Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Slip-Fit. Without O2 Sensor Port. The new Flowmaster replacement catalytic converters are made to meet and exceed...
      Exceed all federal emission standardsStainless Steel shells
      $116.53 - $204.95
    • Flowmaster® 220 Series Oval Catalytic Converter
      (5 reviews)
      # 87243712
      Universal 220 Series Stainless Steel Oval Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Slip-Fit. Without O2 Sensor Port. The new Flowmaster replacement catalytic converters are made to meet and exceed all...
      Exceed all federal emission standardsStainless Steel shells
      $68.56
    • Flowmaster® 222 Series Round Catalytic Converter
      (5 reviews)
      # 87243734
      Universal 222 Series Stainless Steel Round Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Slip-Fit. Without O2 Sensor Port. The new Flowmaster replacement catalytic converters are made to meet and exceed all...
      Exceed all federal emission standardsStainless Steel shells
      $67.12
    • Flowmaster® 223 Series Round Catalytic Converter
      (2 reviews)
      # 492138
      Universal 223 Series Stainless Steel Round Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Slip-Fit. Without O2 Sensor Port. The new Flowmaster replacement catalytic converters are made to meet and exceed all...
      Exceed all federal emission standardsStainless Steel shells
      $73.86
    • Flowmaster® 225 Series Oval Catalytic Converter
      (2 reviews)
      # 492154
      Universal 225 Series Stainless Steel Oval Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Slip-Fit. Without O2 Sensor Port. The new Flowmaster replacement catalytic converters are made to meet and exceed all...
      Exceed all federal emission standardsStainless Steel shells
      $68.02 - $71.98
    • Flowmaster® 240 Series Oval Catalytic Converter
      (7 reviews)
      # 87243745
      Universal 240 Series Stainless Steel Oval Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Slip-Fit. Without O2 Sensor Port. The new Flowmaster replacement catalytic converters are made to meet and exceed all...
      Exceed all federal emission standardsStainless Steel shells
      $141.53 - $144.93
    • Flowmaster® 250 Series Oval Catalytic Converter
      (5 reviews)
      # 87243747
      Universal 250 Series Stainless Steel Oval Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Slip-Fit. Without O2 Sensor Port. The new Flowmaster replacement catalytic converters are made to meet and exceed all...
      Exceed all federal emission standardsStainless Steel shells
      $130.99 - $147.34
    • Flowmaster® 260 Series Stainless Steel Oval Catalytic Converter (2600230)
      (5 reviews)
      # mpn886220
      Universal 260 Series Stainless Steel Oval Catalytic Converter without Air Tube by Flowmaster®. 3" Inlet / 3" Outlet Diameter, 21.5" Length. Inlet / Outlet Connection Type: Slip-Fit. Without O2 Sensor Port. The new Flowmaster...
      Exceed all federal emission standardsStainless Steel shells
      $247.74
    • Flowmaster® 282 Series OBDII Catalytic Converter
      (7 reviews)
      # 492281
      Universal 282 Series OBDII Stainless Steel Catalytic Converter by Flowmaster®. The new Flowmaster replacement catalytic converters are made to meet and exceed all federal environmental regulations and, as all Flowmaster products,...
      Exceed all federal emission standardsStainless Steel shells
      $102.20 - $142.92
    • Flowmaster® 283 Series OBDII Round Catalytic Converter
      (2 reviews)
      # 3138250
      Universal 283 Series OBDII Stainless Steel Round Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Slip-Fit. The new Flowmaster replacement catalytic converters are made to meet and exceed all federal...
      Exceed all federal emission standardsStainless Steel shells
      $110.23 - $127.74
    • Flowmaster® 284 Series OBDII Oval Catalytic Converter
      (0 reviews)
      # 87281464
      Universal 284 Series OBDII Stainless Steel Oval Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Slip-Fit. Without O2 Sensor Port. The new Flowmaster replacement catalytic converters are made to meet and exceed...
      Exceed all federal emission standardsStainless Steel shells
      $187.88
    • Flowmaster® 290 Series Oval Catalytic Converter
      (5 reviews)
      # 87243764
      Universal 290 Series Stainless Steel Oval Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Slip-Fit. The new Flowmaster replacement catalytic converters are made to meet and exceed all federal environmental...
      Exceed all federal emission standardsStainless Steel shells
      $108.66 - $128.44
    • Flowmaster® 3512 Series OBDII Stainless Steel Oval Catalytic Converter (3512025)
      (2 reviews)
      # mpn918025
      Universal 3512 Series OBDII Stainless Steel Oval Catalytic Converter without Air Tube by Flowmaster®. 2.5" Inlet / 2.5" Outlet Diameter, 14.25" Length. Inlet / Outlet Connection Type: Clamp-On. The new Flowmaster replacement...
      Exceed all federal emission standardsStainless Steel shells
      $163.39
    • Flowmaster® 3588 Series Pre-OBDII Round Catalytic Converter
      (2 reviews)
      # 23000953
      Universal 3588 Series Pre-OBDII Stainless Steel Round Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Slip-Fit. The new Flowmaster replacement catalytic converters are made to meet and exceed all federal...
      Exceed all federal emission standardsStainless Steel shells
      $197.80
    • Flowmaster® 3589 Series Pre-OBDII Round Catalytic Converter
      (2 reviews)
      # 23000959
      Universal 3589 Series Pre-OBDII Stainless Steel Round Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Slip-Fit. The new Flowmaster replacement catalytic converters are made to meet and exceed all federal...
      Exceed all federal emission standardsStainless Steel shells
      $218.19 - $343.62
    • Flowmaster® 3612 Series OBDII Stainless Steel Oval Catalytic Converter (3612024)
      (2 reviews)
      # mpn918033
      Universal 3612 Series OBDII Stainless Steel Oval Catalytic Converter without Air Tube by Flowmaster®. 2.25" Inlet / 2.25" Outlet Diameter, 12.25" Length. Inlet / Outlet Connection Type: Clamp-On. The new Flowmaster replacement...
      Exceed all federal emission standardsStainless Steel shells
      $185.80
    • Flowmaster® 3612 Series Stainless Steel Oval Catalytic Converter (3612125)
      (2 reviews)
      # mpn918035
      Universal 3612 Series Stainless Steel Oval Catalytic Converter without Air Tube by Flowmaster®. 2.5" Inlet / 2.5" Outlet Diameter, 12.25" Length. Inlet / Outlet Connection Type: Clamp-On. The new Flowmaster replacement catalytic...
      Exceed all federal emission standardsStainless Steel shells
      $146.59
    • Flowmaster® 3910 Series OBDII Stainless Steel Round Catalytic Converter (3910124)
      (2 reviews)
      # mpn918036
      Universal 3910 Series OBDII Stainless Steel Round Catalytic Converter without Air Tube by Flowmaster®. 2.25" Inlet / 2.25" Outlet Diameter, 14.25" Length. Inlet / Outlet Connection Type: Clamp-On. The new Flowmaster replacement...
      Exceed all federal emission standardsStainless Steel shells
      $271.21
    • Flowmaster® 3912 Series OBDII Catalytic Converter
      (2 reviews)
      # 23000943
      Universal 3912 Series OBDII Stainless Steel Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Clamp-On. The new Flowmaster replacement catalytic converters are made to meet and exceed all federal environmental...
      Exceed all federal emission standardsStainless Steel shells
      $215.14 - $269.17
    • Flowmaster® 3932 Series Pre-OBDII Round Catalytic Converter
      (2 reviews)
      # 23000964
      Universal 3932 Series Pre-OBDII Stainless Steel Round Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Slip-Fit. The new Flowmaster replacement catalytic converters are made to meet and exceed all federal...
      Exceed all federal emission standardsStainless Steel shells
      $218.19
    • Flowmaster® 3938 Series Pre-OBDII Stainless Steel Round Catalytic Converter (3938024)
      (2 reviews)
      # mpn918043
      Universal 3938 Series Pre-OBDII Stainless Steel Round Catalytic Converter without Air Tube by Flowmaster®. 2.25" Inlet / 2.25" Outlet Diameter, 13" Length. Inlet / Outlet Connection Type: Clamp-On. The new Flowmaster replacement...
      Exceed all federal emission standardsStainless Steel shells
      $198.83
    • Flowmaster® 3940 Series OBDII Catalytic Converter
      (2 reviews)
      # 23000946
      Universal 3940 Series OBDII Stainless Steel Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Clamp-On. The new Flowmaster replacement catalytic converters are made to meet and exceed all federal environmental...
      Exceed all federal emission standardsStainless Steel shells
      $229.41 - $294.68
    • Flowmaster® 3981 Series Pre-OBDII Round Catalytic Converter
      (2 reviews)
      # 23000970
      Universal 3981 Series Pre-OBDII Stainless Steel Round Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Clamp-On. The new Flowmaster replacement catalytic converters are made to meet and exceed all federal...
      Exceed all federal emission standardsStainless Steel shells
      $215.14
    • Flowmaster® 3982 Series Pre-OBDII Oval Catalytic Converter
      (2 reviews)
      # 23000973
      Universal 3982 Series Pre-OBDII Stainless Steel Oval Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Clamp-On. The new Flowmaster replacement catalytic converters are made to meet and exceed all federal...
      Exceed all federal emission standardsStainless Steel shells
      $215.14
    • Flowmaster® 3983 Series Pre-OBDII Stainless Steel Oval Catalytic Converter (3983025)
      (2 reviews)
      # mpn918050
      Universal 3983 Series Pre-OBDII Stainless Steel Oval Catalytic Converter without Air Tube by Flowmaster®. 2.5" Inlet / 2.5" Outlet Diameter, 16.5" Length. Inlet / Outlet Connection Type: Clamp-On. The new Flowmaster replacement...
      Exceed all federal emission standardsStainless Steel shells
      $215.14
    • Flowmaster® 3998 Series Pre-OBDII Round Catalytic Converter
      (2 reviews)
      # 23000976
      Universal 3998 Series Pre-OBDII Stainless Steel Round Catalytic Converter by Flowmaster®. Inlet / Outlet Connection Type: Clamp-On. The new Flowmaster replacement catalytic converters are made to meet and exceed all federal...
      Exceed all federal emission standardsStainless Steel shells
      $190.67
    • Vibrant Performance® GESI® High Output Catalytic Converters
      (0 reviews)
      # 78902206
      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
    • Vibrant Performance® High Output Catalytic Converters
      (0 reviews)
      # 78902217
      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
    • Stainless Works® 304 SS High-Flow Catalytic Converter
      (0 reviews)
      # 83115043
      Universal 304 SS High-Flow Catalytic Converter by Stainless Works®. This superior product is made from high-grade stainless steel to ensure excellent quality and maximum resistance to corrosion. Engineered with careful attention to...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $184.50
    • Vibrant Performance® GM Style Spring Bolt Kit
      (0 reviews)
      # 78902214
      Universal GM Style Spring Bolt Kit by Vibrant Performance®. A simple solution for a common problem.
      Made of High Quality MaterialsAvailable in different sizes
      $8.25 - $12.10
    • Eastern® ECO CARB Direct Fit Rear Catalytic Converter
      (0 reviews)
      # 78560440
      Subaru WRX 2003, ECO CARB Direct Fit TWC Rear Catalytic Converter by Eastern®. 16" Overall Length. Inlet Type 1: 2.50" ID. Outlet Type 1: 2.5" ID. With One Center Oxygen Sensor Port. Conv. Type: TWC(2). If you need to replace your...
      Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
      $90.49
    • DEC® Catalytic Converter and Pipe Assembly
      (0 reviews)
      # 86066730
      Subaru WRX 2003, Catalytic Converter and Pipe Assembly by DEC®. With Pipe Assembly and O2 Sensor. Pick out a catalytic converter by DEC and get your emissions back into check without worrying to fail again. These catalytic...
      Direct fitMade from a heavy duty stainless steel outer shell
      $205.03
    • Davico® Direct Fit Catalytic Converter
      (0 reviews)
      # 83041660
      Subaru WRX 2003, Direct Fit Catalytic Converter by Davico®. This direct-fit catalytic converter by Davico will be a great solution to replace your failed or damaged catalytic converter. Once your stock cat fails to perform its job,...
      Helps your vehicle emit harmless gasesDirect OEM replacement
      $249.61 - $270.14


    2003 Subaru WRX Catalytic Converters Reviews

    Average rating:  4.5  4.5 - 77 reviews
    4 of 5
    Supper Cool Sound!
    I bought this for my Mitsubishi and it sounds awesome! It's got a 3.5 l v6 and it makes it sound like its very souped up! And almost like it has a v8 in it. I couldn't be more happy with this product the sound will blow your mind on whatever you choose to put it on whether it be a six cylinder like I put it on or a v8 very much recommend this product if you want a really nearly sound.
    SPosted by Shawn (Shakopee, MN) /
    Was this review helpful for you? Yes
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