Audi A4 Catalytic Converters

Audi A4 Catalytic Converters
  • AP Exhaust® - Catalytic Converter and Pipe Assembly
    AP Exhaust®Catalytic Converter and Pipe Assembly
    13
    # sp128237
    Catalytic Converter and Pipe Assembly by AP Exhaust®. Today’s exhaust performance market continues to cover a broad spectrum of vehicles. The unique nature of this market is that a product demand is not based on vehicle age or use but...
    5-year/50,000-mile warranty on converter body25,000-mile warranty on emissions
    $136.68 - $1,456.60
  • MagnaFlow® - Direct Fit Catalytic Converter
    MagnaFlow®Direct Fit Catalytic Converter
    43
    # sp839
    Direct Fit Catalytic Converter by MagnaFlow®. If your cat needs replacement, install one that will get you through the smog check. The Direct Fit Catalytic Converter is available in Pre-OBD II, OBD II, and OEM Grade OBD II configurations.
    $143.00 - $5,871.00
  • Walker® - CalCat™ Direct Fit Catalytic Converter
    Walker®CalCat™ Direct Fit Catalytic Converter
    10
    # sp198454
    CalCat™ Direct Fit Catalytic Converter by Walker®. Walker offers complete coverage: direct-fit mufflers, converters, pipes, resonators and accessories. Walker is an OE supplier to many major nameplate vehicle manufacturers. Trust...
    Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability
    $209.88 - $2,746.80
  • CATCO® - Catalytic Converter and Pipe Assembly
    CATCO®Catalytic Converter and Pipe Assembly
    1
    # sp192364
    Catalytic Converter and Pipe Assembly by CATCO®. Designed and manufactured with innovative fabrication methods, high-tech materials, and advanced coating, this converter leapfrogs the competition. It delivers unparalleled performance...
    Packed with the latest technological advancementsWill surpass your expectations for performance
    $117.42 - $1,552.56
  • Davico® - Catalytic Converter and Pipe Assembly
    Davico®Catalytic Converter and Pipe Assembly
    16
    # sp128241
    Catalytic Converter and Pipe Assembly 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, replacement is...
    Helps your vehicle emit harmless gasesDirect OEM replacement
    $64.26 - $4,001.73
  • AP Exhaust® - Direct Fit Catalytic Converter
    AP Exhaust®Direct Fit Catalytic Converter
    11
    # sp93964
    Direct Fit Catalytic Converter by AP Exhaust®. Today’s exhaust performance market continues to cover a broad spectrum of vehicles. The unique nature of this market is that a product demand is not based on vehicle age or use but...
    5-year/50,000-mile warranty on converter body25,000-mile warranty on emissions
    $110.03 - $3,719.88
  • Davico® - Direct Fit Catalytic Converter
    Davico®Direct Fit Catalytic Converter
    14
    # sp13664
    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, replacement is the...
    Helps your vehicle emit harmless gasesDirect OEM replacement
    $47.28 - $3,735.21
  • iD Select® - ECO II Universal Fit Catalytic Converter
    iD Select®ECO II Universal Fit Catalytic Converter
    0
    # sp224275
    ECO II Universal Fit Catalytic Converter by iD Select®. Swap out your worn-out or malfunctioning part with this top-notch exhaust product from iD Select. It’s built to OEM specifications to offer the same fit, form, and function...
    Direct OEM replacement for your malfunctioning exhaust partMade to deliver the ultimate in quality, reliability, and value
    $124.41 - $162.91
  • MagnaFlow® - Universal Fit Catalytic Converter
    MagnaFlow®Universal Fit Catalytic Converter
    3
    # sp96188
    Universal Fit Catalytic Converter by MagnaFlow®. If your car needs replacement, install one that will get you through the smog check. This universal fit converter will require some fabrication to be installed, which will involve cutting...
    $83.00 - $1,906.00
  • Walker® - Ultra Direct Fit Catalytic Converters
    Walker®Ultra Direct Fit Catalytic Converters
    14
    # sp187739
    Ultra Direct Fit Catalytic Converters by Walker®. Walker offers complete coverage: direct-fit mufflers, converters, pipes, resonators and accessories. Walker is an OE supplier to many major nameplate vehicle manufacturers. Trust Walker,...
    Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability
    $70.16 - $2,147.08
  • Walker® - Universal Fit Catalytic Converter
    Walker®Universal Fit Catalytic Converter
    6
    # sp4304
    Universal Fit Catalytic Converter by Walker®. Walker offers complete coverage: direct-fit mufflers, converters, pipes, resonators and accessories. Walker is an OE supplier to many major nameplate vehicle manufacturers. Trust Walker, an...
    EPA & CARB Emissions Products Available for Most VehiclesEmission, Structural Warranty: 5 Years / 50,000 Miles (80,000 Kilometers)
    $139.79 - $2,722.16
  • MagnaFlow® - OEM Grade Direct Fit Catalytic Converter
    MagnaFlow®OEM Grade Direct Fit Catalytic Converter
    16
    # sp184176
    OEM Grade Direct Fit Catalytic Converter by MagnaFlow®. If your car needs replacement, install one that will get you through the smog check. This converter is part of the exhaust header/manifold assembly, and it will directly replace...
    $214.00 - $2,612.00
  • Torxe™ - Direct Fit Catalytic Converter
    Torxe™Direct Fit Catalytic Converter
    1
    # sp222948
    Direct Fit Catalytic Converter by Torxe™. Direct Fit Catalytic converter by Torxe. Replace your clogged, corroded, and malfunctioning catalytic converter for the best possible price with a factory-style unit from Torxe. Fitment is...
    Replace an old clogged, corroded, and malfunctioning unit and clear your check engine light for goodVehicle-specific fitment is designed around the exact dimensions of your make and model for proper fit and easy installation
    $138.00 - $572.00
  • AP Exhaust® - Catalytic Converter
    AP Exhaust®Catalytic Converter
    2
    # sp94077
    Catalytic Converter by AP Exhaust®. Today’s exhaust performance market continues to cover a broad spectrum of vehicles. The unique nature of this market is that a product demand is not based on vehicle age or use but instead on an...
    Provides professional installer with immediate installation optionsSpecifically engineered for OBDII equipped vehicles
    $80.78 - $1,065.65
  • iD Select® - ECO III Direct Fit Catalytic Converter
    iD Select®ECO III Direct Fit Catalytic Converter
    0
    # sp224276
    ECO III Direct Fit Catalytic Converter by iD Select®. Swap out your worn-out or malfunctioning part with this top-notch exhaust product from iD Select. It’s built to OEM specifications to offer the same fit, form, and function as your...
    Direct OEM replacement for your malfunctioning exhaust partMade to deliver the ultimate in quality, reliability, and value
    $200.54 - $779.41
  • CATCO® - Direct Fit Catalytic Converters
    CATCO®Direct Fit Catalytic Converters
    2
    # sp192363
    Direct Fit Catalytic Converters by CATCO®. Designed and manufactured with innovative fabrication methods, high-tech materials, and advanced coating, this converter leapfrogs the competition. It delivers unparalleled performance and...
    Packed with the latest technological advancementsWill surpass your expectations for performance
    $135.02 - $983.12
  • Eastern Catalytic® - Converter and Pipe Assembly
    Eastern Catalytic®Converter and Pipe Assembly
    3
    # sp128204
    Converter and Pipe Assembly by Eastern Catalytic®. If you need to replace your failed or damaged catalytic converter, this product is the right choice. Designed specifically for your vehicle, this catalytic converter is a great...
    Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
    $101.65 - $931.17
  • iD Select® - Standard Universal Fit Catalytic Converter
    iD Select®Standard Universal Fit Catalytic Converter
    0
    # sp224286
    Standard Universal Fit Catalytic Converter by iD Select®. Swap out your worn-out or malfunctioning part with this top-notch exhaust product from iD Select. It’s built to OEM specifications to offer the same fit, form, and function...
    Direct OEM replacement for your malfunctioning exhaust partMade to deliver the ultimate in quality, reliability, and value
    $14.71 - $225.30
  • CATCO® - Universal Fit Catalytic Converters
    CATCO®Universal Fit Catalytic Converters
    1
    # sp192362
    Universal Fit Catalytic Converters by CATCO®. Designed and manufactured with innovative fabrication methods, high-tech materials, and advanced coating, this converter leapfrogs the competition. It delivers unparalleled performance and...
    Packed with the latest technological advancementsWill surpass your expectations for performance
    $59.23 - $837.61
  • Eastern Catalytic® - Direct Fit Catalytic Converter
    Eastern Catalytic®Direct Fit Catalytic Converter
    4
    # sp4294
    Direct Fit Catalytic Converter by Eastern Catalytic®. If you need to replace your failed or damaged catalytic converter, this product is the right choice. Designed specifically for your vehicle, this catalytic converter is a great...
    Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
    $135.43 - $1,072.26
  • Eastern Catalytic® - ECO III Direct Fit Converter and Pipe Assembly
    Eastern Catalytic®ECO III Direct Fit Converter and Pipe Assembly
    3
    # sp128208
    ECO III Direct Fit Converter and Pipe Assembly by Eastern Catalytic®. If you need to replace your failed or damaged catalytic converter, this product is the right choice. Designed specifically for your vehicle, this catalytic converter...
    Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
    $183.26 - $1,176.65
  • Davico® - Universal Fit Catalytic Converter
    Davico®Universal Fit Catalytic Converter
    0
    # sp132566
    Universal Fit Catalytic Converter by Davico®. This Universal 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, replacement is...
    Helps your vehicle emit harmless gasesDirect OEM replacement
    $122.58 - $1,656.71
  • TruParts® - Exhaust System Hanger
    TruParts®Exhaust System Hanger
    0
    # sp229005
    Exhaust System Hanger by TruParts®. Go with this high-quality product to restore your vehicle’s lost power and bring it back to its optimal condition. Made from the finest materials in compliance with rigorous industry standards,...
    Made utilizing the finest materials and equipmentEngineered to restore your vehicle to its pristine condition
    $0.32 - $54.19
  • BRExhaust® - Catalytic Converter and Pipe Assembly
    BRExhaust®Catalytic Converter and Pipe Assembly
    2
    # sp128225
    Catalytic Converter and Pipe Assembly by BRExhaust®. If you're in need of a replacement catalytic converter, you can't do better than BRExhaust. They're a leading supplier to vehicle manufacturers and use advanced manufacturing...
    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
    $173.84 - $1,511.07
  • Eastern Catalytic® - ECO II Direct Fit Converter and Pipe Assembly
    Eastern Catalytic®ECO II Direct Fit Converter and Pipe Assembly
    5
    # sp128207
    ECO II Direct Fit Converter and Pipe Assembly by Eastern Catalytic®. If you need to replace your failed or damaged catalytic converter, this product is the right choice. Designed specifically for your vehicle, this catalytic converter...
    Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor
    $206.96 - $1,113.04
  • AP Exhaust® - 608 Series Universal Fit Catalytic Converters
    AP Exhaust®608 Series Universal Fit Catalytic Converters
    1
    # sp256847
    608 Series Universal Fit Catalytic Converters by AP Exhaust®. Three-Way No / Air OBDII by designed US-EPA Compliant catalytic converters are efficient at the oxidation of HC’s and CO, and very efficient at the reduction of NOx,...
    A multitude of Universal converter bodies provided for maximum coverageProvides professional installer with immediate installation options
    $137.74 - $368.55
  • iD Select® - ECO II Direct Fit Catalytic Converter
    iD Select®ECO II Direct Fit Catalytic Converter
    0
    # sp224271
    ECO II Direct Fit Catalytic Converter by iD Select®. Swap out your worn-out or malfunctioning part with this top-notch exhaust product from iD Select. It’s built to OEM specifications to offer the same fit, form, and function as...
    Direct OEM replacement for your malfunctioning exhaust partMade to deliver the ultimate in quality, reliability, and value
    $181.92 - $763.83
  • CATCO® - Select Plus Tech Series Universal Fit Catalytic Converters
    CATCO®Select Plus Tech Series Universal Fit Catalytic Converters
    0
    # sp192365
    Select Plus Tech Series Universal Fit Catalytic Converters by CATCO®. Designed and manufactured with innovative fabrication methods, high-tech materials, and advanced coating, this converter leapfrogs the competition. It delivers...
    Packed with the latest technological advancementsWill surpass your expectations for performance
    $279.65 - $644.78
  • Walker® - Ultra™ Catalytic Converters
    Walker®Ultra™ Catalytic Converters
    3
    # sp187740
    Ultra™ Catalytic Converters by Walker®. Walker offers complete coverage: direct-fit mufflers, converters, pipes, resonators and accessories. Walker is an OE supplier to many major nameplate vehicle manufacturers. Trust Walker, an...
    Constructed to meet your vehicle’s specific emissions requirementsFeatures stainless steel body with aluminized steel pipe and heat shields
    $62.19 - $535.99
  • BRExhaust® - Catalytic Converter
    BRExhaust®Catalytic Converter
    3
    # sp4602
    Catalytic Converter by BRExhaust®. BRExhaust has a comprehensive range of more than 1,000 petrol and diesel catalytic converters, including the latest Euro 4 type-approved units. Manufactured in TUV-certified plants using the latest...
    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
    $127.22 - $929.13




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Everybody knows that our environment can be negatively affected by harmful exhaust gases from internal combustion engines. A catalytic converter is a device created to control your Audi A4’s emissions in the form of carbon monoxide and hydrocarbons. The chemical reaction takes place within the catalytic converter, or “cat” for short. This reaction is often referred to as “redox,” which stands for reduction-oxidation. When the exhaust heats the spongy precious-metal element inside the steel casing, it starts to catalyze harmful pollutants turning them into less harmful gases.

Since 1975, the use of catalytic converters in the U.S. became a legal requirement on all gasoline-powered autos. Catalytic converters provide a huge service for mother nature while reducing the greenhouse effect thus protecting the environment. Although, catalytic converters, just like all automotive parts, wear out and may get clogged, with such tell-tale signs as poor acceleration, lower fuel efficiency, and harder starts being among some of the most obvious ones. We carry a wide range of high-quality Audi A4 catalytic converters & components offered at an affordable price, so you can easily restore the emission control system of your car.

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