Audi Catalytic Converters

The Audi 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.

Filter
sort by
  • Recommended
  • Price Low to High
  • Price High to Low
  • Top Rated Products
filter by:
Brand
  • AJUSA
  • Beck Arnley
  • Bosal
  • DEC
  • Eastern Catalytic
  • Elring
  • Emico
  • Flowmaster
  • Genuine
  • HJS
  • MagnaFlow
  • Victor Reinz
  • Walker
  • Weapon-R
Price
  • < 50
  • 50-100
  • 100-300
  • 300-500
  • 500-700
  • 700-900
  • 900-1100
  • 1100-1300
Rating
  • 4 & Up
  • Not Yet Rated
Clear All Filters
show:
sort by:
view as:
1 - 15 of 41001 of 28
    • (16 reviews)
      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 Walker,...
      $112.16from $89.73 - $895.38
      # 4303
    • (18 reviews)
      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...
      $73.03from $58.42 - $895.38
      # 4305
    • (0 reviews)
      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...
      $112.81from $90.25 - $546.09
      # 4294
    • (9 reviews)
      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...
      $45.33from $36.26 - $1,144.85
      # 7036
    • (0 reviews)
      Catalytic Converter Gasket by Victor Reinz®. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find high...
      $3.58from $2.86 - $38.90
      # 5612
    • (7 reviews)
      Catalytic Converter by Bosal®. Bosal 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...
      $90.38from $72.30 - $884.01
      # 4602
    • (2 reviews)
      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...
      $73.03from $58.42 - $211.72
      # 4304
    • (2 reviews)
      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...
      $104.16from $83.33 - $180.82
      # 7146
    • (7 reviews)
      Replacement Catalytic Converter by Bosal®. If you’re in need of a replacement catalytic converter, you can’t do better than Bosal. They’re a leading supplier to vehicle manufacturers and use advanced manufacturing techniques...
      $108.38from $86.70 - $884.01
      # 7148
    • (1 reviews)
      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...
      $42.48from $33.98 - $363.49
      # 7037
    • (0 reviews)
      Catalytic Converter Gasket by AJUSA®. If you need durable gaskets to prevent leaks on your vehicle, Ajusa is the way to go. Engineered using the latest technologies and global engineering resources, the gaskets meet specific OEM...
      $11.26from $9.01 - $9.02
      # 5330
    • (11 reviews)
      Exhaust Gasket 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...
      $2.08from $1.66 - $19.84
      # 4409
    • (0 reviews)
      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...
      $42.48from $33.98 - $237.40
      # 4295
    • (0 reviews)
      Direct Fit Federal Pre-OBDII Catalytic Converter (22918) by MagnaFlow®. 2" Inlet / 2" Outlet Diameter. 6.63" Wide. Without Air Tube. If your car needs replacement, install one that will get you through the smog check and give you...
      $161.04$128.83
      # 1118898
    • (0 reviews)
      Direct Fit California Pre-OBDII Catalytic Converter (332918) by MagnaFlow®. 5.25" Wide. Includes Assembly. If your car needs replacement, install one that will get you through the smog check and give you more horsepower. This...
      $373.00$298.40
      # 1116032




    Audi Catalytic Converters Reviews
    Average rating: 5 4.8 - 1 reviews
    (4.8)
    APPEARANCE
    EASE OF INSTALLATION
    PRICE/VALUE
    QUALITY
    OEM Replacement
    1996 Audi A6 | Posted by Ferreira | (Colorado Springs, CO)

    After my catalytic converted failed I purchased this pair of left and right converters. These parts fit my car perfect. The price is good compared to other replacement brands.

    Was this review helpful for you? YesNo
    Share this review: