Toyota Catalytic Converters
- Eastern Catalytic®Universal Fit Round Body Catalytic ConverterUniversal Catalytic Converter by Eastern Catalytic®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Whether your catalytic converter is damaged by road debris or failed due to an engine problem, you...$151.91 - $181.15
- Eastern Catalytic®Universal Fit Round Body Catalytic ConverterUniversal Catalytic Converter by Eastern Catalytic®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Contains approximately 40% higher precious metal content than most other aftermarket brands. Aristo...$360.90 - $462.25
- Walker®Air Tube KitAir Tube Kit 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$53.24
- Nippon Reinz®Catalytic Converter GasketCatalytic Converter Gasket by Nippon Reinz®. Designed utilizing the latest technology, this product by Nippon Reinz Catalytic Converter Gasket features premium quality and will perform better than advertised. Perfect for your vehicle...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$3.71 - $9.31
- Toyota OEExhaust Manifold Nut (90178A0077)Exhaust Manifold Nut (90178A0077) by Toyota OE. There's no better way to make your Toyota look and perform the way it should than relying on genuine Toyota OE parts. Unlike many aftermarket parts, these are made with quality and care...Genuine Toyota OEM parts designed to fit perfectlyCrafted from high-grade materials to ensure superior quality$1.98
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (84267)CalCat™ Catalytic Converter and Pipe Assembly (84267) by Walker®. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. Without Air Tube. With O2 Sensor Port. Catalytic Converter Overall Length: 45.5". Walker is...$784.59
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (84370)CalCat™ Catalytic Converter and Pipe Assembly (84370) by Walker®. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. Without Air Tube. With O2 Sensor Port. Catalytic Converter Overall Length: 45.5". Walker is...$713.25
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (83447)CalCat™ Catalytic Converter and Pipe Assembly (83447) by Walker®. Converter Configuration: Direct Fit. Position: Driver Side. Catalytic Converter Body Shape: Round. With Post-Cat O2 Sensor Port. Catalytic Inlet Diameter: 1.9"....$565.31
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (83454)CalCat™ Catalytic Converter and Pipe Assembly (83454) by Walker®. Converter Configuration: Direct Fit. Position: Passenger Side. Catalytic Converter Body Shape: Round. With Post-Cat O2 Sensor Port. Catalytic Inlet Diameter: 1.88"....$535.60
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (83466)CalCat™ Catalytic Converter and Pipe Assembly (83466) by Walker®. Converter Configuration: Direct Fit. Position: Rear. Catalytic Converter Body Shape: Round. With Post-Cat O2 Sensor Port. Catalytic Converter Overall Length: 31.32"....$624.10
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (83460)CalCat™ Catalytic Converter and Pipe Assembly (83460) by Walker®. Converter Configuration: Direct Fit. Position: Passenger Side. Catalytic Converter Body Shape: Round. Without O2 Sensor Port. Catalytic Converter Overall Length:...$751.91
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (83199)CalCat™ Catalytic Converter and Pipe Assembly (83199) by Walker®. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. With Pre and Post-Cat O2 Sensor Ports. Catalytic Converter Overall Length: 81.5". Walker is...$1,036.24
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (83198)CalCat™ Catalytic Converter and Pipe Assembly (83198) by Walker®. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. With Pre and Post-Cat O2 Sensor Ports. Catalytic Converter Overall Length: 85.25". Walker...$1,027.46
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (81866)CalCat™ Catalytic Converter and Pipe Assembly (81866) by Walker®. Converter Configuration: Direct Fit. Position: Front Passenger Side. Catalytic Converter Body Shape: Round. With 2 Inlets. Without O2 Sensor Port. Catalytic Converter...$629.26
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (81844)CalCat™ Catalytic Converter and Pipe Assembly (81844) by Walker®. Converter Configuration: Direct Fit. Position: Front Passenger Side. Catalytic Converter Body Shape: Round. With 2 Inlets. Without O2 Sensor Port. Catalytic Converter...$929.38
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (82788)CalCat™ Catalytic Converter and Pipe Assembly (82788) by Walker®. Position: Rear. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. Catalytic Converter Overall Length: 35.5". Walker is an OE supplier to many...Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability$817.41
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (83284)CalCat™ Catalytic Converter and Pipe Assembly (83284) by Walker®. Position: Rear. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. Catalytic Converter Overall Length: 48.6". With O2 Sensor Port. Walker is...Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability$354.66
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (83197)CalCat™ Catalytic Converter and Pipe Assembly (83197) by Walker®. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. With 1 Inlet. With O2 Sensor Port. Catalytic Converter Overall Length: 33". Walker is an OE...$641.98
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (82697)CalCat™ Catalytic Converter and Pipe Assembly (82697) by Walker®. Converter Configuration: Direct Fit. Position: Rear. Catalytic Converter Body Shape: Round. With 1 Inlet. With O2 Sensor Port. Catalytic Converter Overall Length:...$642.41
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (83288)CalCat™ Catalytic Converter and Pipe Assembly (83288) by Walker®. Converter Configuration: Direct Fit. Position: Rear. Catalytic Converter Body Shape: Round. With 2 Inlets. With O2 Sensor Port. Catalytic Converter Overall Length:...$454.39
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (83282)CalCat™ Catalytic Converter and Pipe Assembly (83282) by Walker®. Converter Configuration: Direct Fit. Position: Rear. Catalytic Converter Body Shape: Round. With 1 Inlet. With O2 Sensor Port. Catalytic Converter Overall Length:...$416.84
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (82570)CalCat™ Catalytic Converter and Pipe Assembly (82570) by Walker®. Position: Front. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. Catalytic Converter Overall Length: 20". With O2 Sensor Port. Walker is an...Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability$504.38
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (81798)CalCat™ Catalytic Converter and Pipe Assembly (81798) by Walker®. Position: Rear. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. Catalytic Converter Overall Length: 31.375". Without O2 Sensor Port. Walker...Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability$834.25
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (82661)CalCat™ Catalytic Converter and Pipe Assembly (82661) by Walker®. Converter Configuration: Direct Fit. Position: Rear. Catalytic Converter Body Shape: Round. With 1 Inlet. Without O2 Sensor Port. Catalytic Converter Overall Length:...$830.01
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (82650)CalCat™ Catalytic Converter and Pipe Assembly (82650) by Walker®. Converter Configuration: Direct Fit. Position: Rear. Catalytic Converter Body Shape: Round. With 1 Inlet. With O2 Sensor Port. Catalytic Converter Overall Length:...$849.41
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (81744)CalCat™ Catalytic Converter and Pipe Assembly (81744) by Walker®. Position: Rear. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. Catalytic Converter Overall Length: 31". With O2 Sensor Port. Walker is an...Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability$1,043.41
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (81743)CalCat™ Catalytic Converter and Pipe Assembly (81743) by Walker®. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. With 2 Inlets. With O2 Sensor Port. Catalytic Converter Overall Length: 31.5". Walker is an...$1,112.19
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (81768)CalCat™ Catalytic Converter and Pipe Assembly (81768) by Walker®. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. With 1 Inlet. Without O2 Sensor Port. Catalytic Converter Overall Length: 29". Walker is an...$1,147.76
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (81755)CalCat™ Catalytic Converter and Pipe Assembly (81755) by Walker®. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. With 2 Inlets. Without O2 Sensor Port. Catalytic Converter Overall Length: 49.75". Walker...$1,191.34
- Walker®CalCat™ Direct Fit Small Oval Body Catalytic Converter and Pipe Assembly (81945)CalCat™ Catalytic Converter and Pipe Assembly (81945) by Walker®. Position: Front Driver Side. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Small Oval. Catalytic Converter Overall Length: 44". With O2 Sensor...Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability$1,034.27
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The Toyota 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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