Scion Catalytic Converters
- AP Exhaust®Direct Fit Catalytic Converter and Pipe Assembly (643006)Catalytic Converter and Pipe Assembly (643006) by AP Exhaust®. Converter Configuration: Direct Fit. Catalytic Converter Overall Length: 77.25". Without O2 Sensor Port. Without Air Tube. Today’s exhaust performance market continues to...5-year/50,000-mile warranty on converter body25,000-mile warranty on emissions$478.50
- Walker®Ultra™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (47848)Ultra™ Catalytic Converter and Pipe Assembly (47848) by Walker®. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. Catalytic Converter Overall Length: 82.5". With O2 Sensor Port. Walker is an OE supplier to...High precious metal load and high technology washcoat for premium performanceBody and pipe heat shields made of high quality materials for durability$558.35
- Walker®Ultra™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (16575)Ultra™ Catalytic Converter and Pipe Assembly (16575) by Walker®. Position: Rear. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. Catalytic Converter Overall Length: 41.75". 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$403.62
- Walker®Ultra™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (53613)Ultra™ Catalytic Converter and Pipe Assembly (53613) by Walker®. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. Catalytic Converter Overall Length: 30". With O2 Sensor Port. Walker is an OE supplier to...Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability$390.02
- Walker®Ultra™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (16339)Ultra™ Catalytic Converter and Pipe Assembly (16339) by Walker®. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. Catalytic Converter Overall Length: 29.625". With O2 Sensor Port. Walker is an OE supplier...Constructed to meet your vehicle’s specific emissions requirementsBody and pipe heat shields made of high quality materials for durability$579.07
- Davico®Direct Fit Catalytic Converter (17615)Catalytic Converter by Davico®. Converter Configuration: Direct Fit. Position: Front. With 1 O2 Sensor Port. Catalytic Converter Overall Length: 28". This direct-fit catalytic converter by Davico will be a great solution to replace your...$639.66
- Davico®Direct Fit Catalytic Converter (17186)Catalytic Converter (17186) by Davico®. Converter Configuration: Direct Fit. Position: Rear. Without O2 Sensor Port. Catalytic Converter Overall Length: 41.5". This direct-fit catalytic converter by Davico will be a great solution to...$378.12
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter (84287)CalCat™ Catalytic Converter (84287) by Walker®. Converter Configuration: Direct Fit. Position: Rear. Catalytic Converter Body Shape: Round. Without Air Tube. Without O2 Sensor Port. Catalytic Converter Overall Length: 18.5". Walker...$492.41
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter (84281)CalCat™ Catalytic Converter (84281) by Walker®. Converter Configuration: Direct Fit. Position: Rear. Catalytic Converter Body Shape: Round. Without O2 Sensor Port. Catalytic Converter Overall Length: 41.74". Walker is an OE supplier...$410.68
- AP Exhaust®Direct Fit Catalytic Converter (770768)Catalytic Converter by AP Exhaust®. Converter Configuration: Direct Fit. 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...$960.03
- Walker®CalCat™ Direct Fit Round Body Catalytic Converter and Pipe Assembly (83281)CalCat™ Catalytic Converter and Pipe Assembly (83281) by Walker®. Converter Configuration: Direct Fit. Position: Rear. Catalytic Converter Body Shape: Round. With 1 Inlet. Without O2 Sensor Port. Catalytic Converter Overall Length:...$566.20
- 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
- MagnaFlow®Direct Fit Catalytic Converter (4481262)Catalytic Converter (4481262) by MagnaFlow®. Converter Configuration: Direct Fit. If your car needs replacement, install one that will get you through the smog check. This converter will directly replace the factory unit, with little or...$1,348.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (93300)Heavy Metal Catalytic Converter (93300) by MagnaFlow®. Converter Configuration: Direct Fit. With Gasket. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. Catalytic Inlet Diameter: 2". Catalytic Outlet Diameter: 2". Catalytic...$578.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (24187)Heavy Metal Catalytic Converter (24187) by MagnaFlow®. Converter Configuration: Direct Fit. With Gasket. Without Air Tube. Catalytic Converter Overall Length: 31". If your car needs replacement, install one that will get you through the...$464.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (24183)Heavy Metal Catalytic Converter by MagnaFlow®. Converter Configuration: Direct Fit. With Gasket. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter: 2.5". Catalytic Converter Overall...$354.00
- MagnaFlow®Heavy Metal Universal Fit Round Body Catalytic Converter (99304HM)Heavy Metal Catalytic Converter (99304HM) by MagnaFlow®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Round. Without Air Tube. With Post-Cat O2 Sensor Port. Catalytic Inlet Diameter: 2". Catalytic Outlet...$188.00
- MagnaFlow®OBDII Direct Fit Catalytic Converter (4481182)OBDII Catalytic Converter (4481182) by MagnaFlow®. Converter Configuration: Direct Fit. If your car needs replacement, install one that will get you through the smog check. This converter will directly replace the factory unit, with...$1,163.00
- MagnaFlow®OBDII Direct Fit Round Body Catalytic Converter (4481909)OBDII Catalytic Converter (4481909) by MagnaFlow®. Converter Configuration: Direct Fit. Catalytic Converter Body Shape: Round. Without Air Tube. With 2 O2 Sensor Ports. Catalytic Inlet Diameter: 2". Catalytic Outlet Diameter: 2"....$1,457.00
- MagnaFlow®OBDII Spun Universal Fit Round Body Catalytic Converter (551005)OBDII Spun Catalytic Converter (551005) by MagnaFlow®. Converter Configuration: Universal Fit. Position: Front Driver Side. Catalytic Converter Body Shape: Round. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet Diameter:...$465.00
- MagnaFlow®OBDII Universal Fit Oval Body Catalytic Converter (448304)OBDII Catalytic Converter (448304) by MagnaFlow®. Converter Configuration: Universal Fit. Catalytic Converter Body Shape: Oval. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet Diameter: 2". Catalytic Outlet Diameter: 2"....$718.00
- MagnaFlow®OBDII Universal Fit Oval Body Catalytic Converter (448305)OBDII Catalytic Converter (448305) by MagnaFlow®. Converter Configuration: Universal Fit. Position: Driver Side. Catalytic Converter Body Shape: Oval. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet Diameter: 2.25". Catalytic...$718.00
- MagnaFlow®OBDII Universal Fit Round Body Catalytic Converter (557405)OBDII Catalytic Converter (557405) by MagnaFlow®. Converter Configuration: Universal Fit. Position: Rear. Catalytic Converter Body Shape: Round. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet Diameter: 2.25". Catalytic Outlet...$353.00
- MagnaFlow®OEM Grade Universal Fit Round Body Catalytic Converter (51304)OEM Grade Catalytic Converter (51304) by MagnaFlow®. Converter Configuration: Universal Fit. Position: Passenger Side. Catalytic Converter Body Shape: Round. Without Air Tube. With Post-Cat O2 Sensor Port. Catalytic Inlet Diameter: 2"....$202.00
- MagnaFlow®OEM Grade Universal Fit Round Body Catalytic Converter (51206)OEM Grade Catalytic Converter (51206) by MagnaFlow®. Converter Configuration: Universal Fit. Position: Driver Side. Catalytic Converter Body Shape: Round. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet Diameter: 2.5"....$194.00
- CATCO®Direct Fit Catalytic Converter and Pipe Assembly (4806)Catalytic Converter and Pipe Assembly (4806) by CATCO®. Converter Configuration: Direct Fit. With 1 O2 Sensor Port. Catalytic Converter Overall Length: 84". Designed and manufactured with innovative fabrication methods, high-tech...$486.03
- Davico®Direct Fit Catalytic Converter and Pipe Assembly (18394F)Catalytic Converter and Pipe Assembly (18394F) by Davico®. Converter Configuration: Direct Fit. Position: Front. With 2 O2 Sensor Ports. Catalytic Converter Overall Length: 31". This direct-fit catalytic converter by Davico will be a...$253.14
- Davico®Direct Fit Catalytic Converter and Pipe Assembly (18479)Catalytic Converter and Pipe Assembly by Davico®. Converter Configuration: Direct Fit. Position: Rear. Without O2 Sensor Port. Catalytic Converter Overall Length: 105". This direct-fit catalytic converter by Davico will be a great...$534.42
- Davico®Direct Fit Catalytic Converter and Pipe Assembly (18056F)Catalytic Converter and Pipe Assembly (18056F) by Davico®. Converter Configuration: Direct Fit. Position: Center Front. With 2 O2 Sensor Ports. Catalytic Converter Overall Length: 32". This direct-fit catalytic converter by Davico will...$384.83
- Davico®Direct Fit Catalytic Converter and Pipe Assembly (18394)Catalytic Converter and Pipe Assembly (18394) by Davico®. Converter Configuration: Direct Fit. Position: Front. With 2 O2 Sensor Ports. Catalytic Converter Overall Length: 90". This direct-fit catalytic converter by Davico will be a...$387.08
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The Scion 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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