GMC Catalytic Converters
- iD Select®ECO III Direct Fit Catalytic ConverterECO 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 - $779.41Save: 10%$180.49 - $701.47
- Eastern Catalytic®Direct Fit Catalytic ConverterDirect 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 AssemblyECO 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
- iD Select®Standard Universal Fit Catalytic ConverterStandard 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$8.37 - $225.30Save: 10%$7.54 - $202.78
- Dorman®Exhaust Catalytic ConvertersExhaust Catalytic Converters by Dorman®. More like a complete kit than a single part, many of the Exhaust Manifolds include gaskets and hardware for a complete installation. Since this part is a direct replacement, the exact fit adds...High Quality construction to ensure long-lasting durabilityReplacement Regulates exhaust emissions and turns off check engine light$286.07 - $1,790.36
- Davico®Universal Fit Catalytic ConverterUniversal 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
- CATCO®Universal Fit Catalytic ConvertersUniversal 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
- aFe®Direct Fit Catalytic ConverterDirect Fit Catalytic Converter by aFe®. Replace the faulty or old rear catalytic converter with the all new aFe power direct-fit front cat replacement. This cat replacement is constructed of 100% MIG welded stainless steel for strength...$225.00 - $1,113.00Save: 10%$202.50 - $1,001.70
- BRExhaust®Catalytic Converter and Pipe AssemblyCatalytic 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 GM Exhaust Manifold with Integrated Catalytic ConverterECO GM Exhaust Manifold with Integrated Catalytic Converter by Eastern Catalytic®. If you need to replace your failed or damaged manifold, this product is the right choice. Designed specifically for your vehicle, this manifold with...Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor$365.37 - $719.94
- Walker®Exhaust ClampExhaust Clamp 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...Makes installation quick and easyOptimal OE-style fit and quality$1.32 - $39.37
- Walker®Exhaust SpringExhaust Spring 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...Makes installation quick and easyOptimal OE-style fit and quality$2.16 - $4.05
- Walker®Ultra™ Catalytic ConvertersUltra™ 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
- AP Exhaust®608 Series Universal Fit Catalytic Converters608 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®Direct Fit Catalytic Converter and Pipe AssemblyDirect Fit Catalytic Converter and Pipe Assembly 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...Direct OEM replacement for your malfunctioning exhaust partMade to deliver the ultimate in quality, reliability, and value$188.20 - $691.22Save: 10%$169.38 - $622.10
- iD Select®ECO GM Direct Fit Catalytic ConverterECO GM 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$297.13 - $821.21Save: 10%$267.41 - $739.09
- iD Select®ECO GM Exhaust Manifold with Integrated Catalytic ConverterECO GM Exhaust Manifold with Integrated 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,...Direct OEM replacement for your malfunctioning exhaust partMade to deliver the ultimate in quality, reliability, and value$363.54 - $881.87Save: 10%$327.19 - $793.68
- iD Select®ECO GM Universal Fit Catalytic ConverterECO GM 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$212.89 - $216.62Save: 10%$191.61 - $194.95
- iD Select®ECO II Direct Fit Catalytic ConverterECO 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 - $763.83Save: 10%$163.73 - $687.45
- iD Select®ECO III Direct Fit Catalytic Converter and Pipe AssemblyECO III Direct Fit Catalytic Converter and Pipe Assembly 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,...Direct OEM replacement for your malfunctioning exhaust partMade to deliver the ultimate in quality, reliability, and value$161.07 - $1,427.36Save: 10%$144.95 - $1,284.62
- MagnaFlow®Heavy Metal Federal Catalytic Converter with HeaderHeavy Metal Federal Catalytic Converter with Header 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...Reduces harmful emissionsPhysically part of the exhaust header/manifold assembly$393.00 - $1,156.00
- CATCO®Select Plus Tech Series Universal Fit Catalytic ConvertersSelect 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
- Flowmaster®Catalytic ConverterCatalytic Converter by Flowmaster®. The new Flowmaster replacement catalytic converters are made to meet and exceed all federal environmental regulations and, as all Flowmaster products, to deliver the best possible performance. The...$249.95 - $784.95
- BRExhaust®Catalytic ConverterCatalytic 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
- DIY Solutions®Catalytic Converter and Pipe AssemblyCatalytic Converter and Pipe Assembly by DIY Solutions®. If you're seeking to get your steel stallion back to its tip-top condition, then this top-notch replacement solution is what you should definitely look out for. When it comes to...Designed to help restore your vehicle to its former gloryQuick replacement to let you enjoy an awesome ride again$252.91 - $1,064.83Save: up to 6%$237.73 - $1,000.94
- Eastern Catalytic®ECO GM Direct Fit Converter and Pipe AssemblyECO GM 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$204.80 - $838.67
- Eastern Catalytic®ECO II Direct Fit Converter and Pipe AssemblyECO 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
- Eastern Catalytic®Universal Fit Catalytic ConverterUniversal 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 stainless...Converts harmful engine emissions to less dangerous gases and water vaporAdvanced design for maximum engine output$105.33 - $689.93
- DEC®Catalytic ConverterCatalytic Converter by DEC®. Pick out a catalytic converter by DEC and get your emissions back into check without worrying about feature again. These catalytic converters are made from a heavy duty stainless steel outer shell which is...Direct fitMade from a heavy duty stainless steel outer shell$214.59 - $1,821.63
- DEC®Catalytic Converter and Pipe AssemblyCatalytic Converter and Pipe Assembly by DEC®. Pick out a catalytic converter by DEC and get your emissions back into check without worrying about feature again. These catalytic converters are made from a heavy duty stainless steel...Direct fitMade from a heavy duty stainless steel outer shell$233.09 - $3,549.35
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The GMC 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.