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    • Walker® Replacement Exhaust Kit
      (0 reviews)
      # sp18723
      Replacement Exhaust Kit by Walker.
      $1.82 - $846.42
    • Walker® Universal Fit Catalytic Converter
      (0 reviews)
      # 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,...
      $56.41 - $435.22
    • Walker® Catalytic Converter
      (0 reviews)
      # sp4305
      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 industry...
      $56.41 - $846.42
    • Walker® CalCat Universal Fit Rear Catalytic Converter
      (0 reviews)
      # sp7146
      CalCat Universal Fit Rear 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....
      $70.74 - $210.48
    • Eastern® Universal Fit Catalytic Converter
      (0 reviews)
      # sp4295
      Universal Fit Catalytic Converter by Eastern Catalytic. Whether your catalytic converter is damaged by road debris or failed due to an engine problem, you definitely need a new one, and this product is the way to go. Made of...
      $65.15 - $260.28
    • Eastern® EPA Direct Fit Undercar Catalytic Converter
      (0 reviews)
      # sp7036
      EPA Direct Fit Undercar Catalytic Converter by Eastern. 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...
      $41.49 - $789.47
    • Eastern® EPA Universal Fit Undercar Catalytic Converter
      (0 reviews)
      # sp7037
      Whether your catalytic converter is damaged by road debris or failed due to an engine problem, you definitely need a new one, and this product is the way to go. Made of stainless steel, the catalytic converter is designed to reduce...
      $38.88 - $295.98
    • Davico® Direct Fit Catalytic Converter
      (0 reviews)
      # 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...
      $2.32 - $707.98
    • Walker® Exhaust Hanger
      (0 reviews)
      # sp4410
      Exhaust Hanger by Walker. 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. When you choose Walker accessories, you get...
      $1.82 - $50.90
    • Walker® Exhaust Rubber Insulator
      (0 reviews)
      # sp4411
      Exhaust Rubber Insulator by Walker. 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. When you choose Walker...
      $1.82 - $50.90
    • Beck Arnley® Exhaust Gasket
      (0 reviews)
      # sp6393
      Exhaust Gasket by Beck Arnley. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles in the 1950s, brand understands...
      $3.17 - $53.78
    • MagnaFlow® Direct Fit Catalytic Converter
      (0 reviews)
      # sp839
      Direct Fit Catalytic Converter by MagnaFlow. If your cat needs replacement, install one that will get you through the smog check and give you more horsepower. This converter will directly replace the factory unit, with little or no...
      $164.99 - $1,748.68
    • MagnaFlow® Direct Fit Pre-OBDII Catalytic Converter
      (0 reviews)
      # sp7280
      Direct Fit Pre-OBDII Catalytic Converter by MagnaFlow. If your car needs replacement, install one that will get you through the smog check and give you more horsepower. This converter will directly replace the factory unit, with...
      $79.39 - $1,095.80
    • Walker® Aluminized Connector (41945)
      (0 reviews)
      # mpn500322948
      Universal Stainless Steel Aluminized Connector (41945) by Walker. Material: Stainless Steel. Overall Length: 4.5". Finish: Aluminized. This catalytic converter is constructed specially for your vehicle to directly replace the...
      $5.40
    • Walker® Quiet-Flow Stainless Steel Aluminized Oval Muffler (1.625" Center Inlet / 1.5" Offset Outlet) (22221)
      (0 reviews)
      # mpn1873671
      Quiet-Flow Stainless Steel Aluminized Oval Muffler (22221) by Walker. Muffler Series: Quiet-Flow. Muffler Body Height: 3.25". Muffler Body Width: 7.75". Muffler Body Length: 16". Muffler Overall Length: 19.25". Muffler Body...
      $36.79




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    The Renault catalytic converter (AKA catcon or cat) was first introduced in the mid-70's, and back then, it performed only two tasks, which is exactly why it was called a two-way converter. It oxidized carbon monoxide to carbon dioxide and hydrocarbons to water and carbon dioxide (oxidation stage). In 1981, the two-way converter was replaced by a much more efficient three-way catcon, which additionally reduced nitrogen oxide emissions (reduction stage).

    Today, the two-way version is used in diesel applications only, while most vehicles are equipped with a three-way catalytic converter. Located between the engine and muffler, the converter actually resembles a muffler in shape, though the construction of these two units is completely different. The body of the converter is usually made of stainless steel. Inside the body, you'll find an insulated chamber, which contains three main components of any converter: substrate (or catalyst core), washcoat, and catalyst.

    The catalyst core usually has a honeycomb structure, and it's most often a ceramic monolith. Basically, it serves as a support for the washcoat. The washcoat itself is a carrier for the catalytic materials. Materials for the washcoat are chosen to form an irregular surface, which maximizes the catalytically active layer available to react with the exhaust gases. And then comes the catalyst, which is most ofter a mixture of precious metals such as palladium (oxidation catalyst) and rhodium (reduction catalyst). When the exhaust stream passes through the converter, it contacts with the catalyst and all the toxic elements covert into the harmless substances. The leaving gas is monitored by the control system to make sure it meets the emissions requirements.

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    Renault Catalytic Converters Reviews

    Average rating:  4.5  4.5 - 39 reviews
    5 of 5
    CanAmMex® 00747-212 - Thunderbolt™ Hi-Polished Single Rolled Angled Oval Tip
    These appear to be of very good quality, good welds.
    JPosted by John (Enfield, CT) /
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