Buick Catalytic Converters
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (23460)Heavy Metal Catalytic Converter (23460) by MagnaFlow®. Converter Configuration: Direct Fit. With Gaskets. Without Air Tube. With Post-Cat O2 Sensor Port. Catalytic Inlet Diameter: 2". Catalytic Outlet Diameter: 2". Catalytic Converter...$294.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (23406)Heavy Metal Catalytic Converter (23406) by MagnaFlow®. Converter Configuration: Direct Fit. With Gaskets. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. Catalytic Inlet Diameter: 2". Catalytic Outlet Diameter: 2". Catalytic...$327.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (23404)Heavy Metal Catalytic Converter (23404) by MagnaFlow®. Converter Configuration: Direct Fit. With Gasket. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter: 2.5". Catalytic...$291.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (23487)Heavy Metal Catalytic Converter (23487) by MagnaFlow®. Converter Configuration: Direct Fit. With Gaskets. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. Catalytic Inlet Diameter: 2". Catalytic Outlet Diameter: 2". Catalytic...$379.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (24221)Heavy Metal Catalytic Converter (24221) by MagnaFlow®. Converter Configuration: Direct Fit. With Gaskets. Without Air Tube. Catalytic Converter Overall Length: 35.5". If your car needs replacement, install one that will get you through...$436.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (23795)Heavy Metal Catalytic Converter (23795) by MagnaFlow®. Converter Configuration: Direct Fit. With Gasket. Without Air Tube. With Post-Cat O2 Sensor Port. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter: 2.5". Catalytic...$399.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (93171)Heavy Metal Catalytic Converter (93171) by MagnaFlow®. Converter Configuration: Direct Fit. With Gasket. Without Air Tube. With Post-Cat O2 Sensor Port. Catalytic Inlet Diameter: 2.25". Catalytic Outlet Diameter: 2.25". Catalytic...$678.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (24710)Heavy Metal Catalytic Converter (24710) by MagnaFlow®. Converter Configuration: Direct Fit. With Gaskets. Without Air Tube. Without O2 Sensor Port. Catalytic Inlet Diameter: 2.25". Catalytic Outlet Diameter: 2.25". Catalytic Converter...$599.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (24205)Heavy Metal Catalytic Converter (24205) by MagnaFlow®. Converter Configuration: Direct Fit. Without Air Tube. With Post-Cat O2 Sensor Port. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter: 2.5". Catalytic Converter Overall...$419.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (24204)Heavy Metal Catalytic Converter (24204) by MagnaFlow®. Converter Configuration: Direct Fit. With Gasket. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. Catalytic Inlet Diameter: 3". Catalytic Outlet Diameter: 3". Catalytic...$305.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (23994)Heavy Metal Catalytic Converter (23994) by MagnaFlow®. Converter Configuration: Direct Fit. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter: 2.5". Catalytic Converter...$450.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (23967)Heavy Metal Catalytic Converter (23967) by MagnaFlow®. Converter Configuration: Direct Fit. With Gasket. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. Catalytic Converter Overall Length: 47.5". If your car needs replacement,...$384.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (23464)Heavy Metal Catalytic Converter (23464) by MagnaFlow®. Converter Configuration: Direct Fit. With Gasket. Without Air Tube. With Post-Cat O2 Sensor Port. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter: 2.5". Catalytic...$286.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (23433)Heavy Metal Catalytic Converter (23433) by MagnaFlow®. Converter Configuration: Direct Fit. With Gasket. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter: 2.5". Catalytic...$379.00
- MagnaFlow®Heavy Metal Direct Fit Catalytic Converter (23405)Heavy Metal Catalytic Converter (23405) by MagnaFlow®. Converter Configuration: Direct Fit. With Gasket. Without Air Tube. With Pre and Post-Cat O2 Sensor Ports. Catalytic Inlet Diameter: 2.5". Catalytic Outlet Diameter: 2.5". Catalytic...$391.00
- MagnaFlow®OBDII Direct Fit Catalytic Converter (5671177)OBDII Catalytic Converter (5671177) by MagnaFlow®. Converter Configuration: Direct Fit. Position: Rear. Without Air Tube. Without O2 Sensor Port. Catalytic Converter Overall Length: 38". If your car needs replacement, install one that...$973.00
- MagnaFlow®OBDII Direct Fit Catalytic Converter (5411905)OBDII Catalytic Converter (5411905) by MagnaFlow®. Converter Configuration: Direct Fit. Position: Front. Without Air Tube. Without O2 Sensor Port. Catalytic Converter Overall Length: 10.5". If your car needs replacement, install one...$1,189.00
- MagnaFlow®OBDII Direct Fit Catalytic Converter (551909)OBDII Catalytic Converter (551909) by MagnaFlow®. Converter Configuration: Direct Fit. Position: Front. Without Air Tube. Without O2 Sensor Port. Catalytic Converter Overall Length: 10.75". If your car needs replacement, install one...$822.00
- MagnaFlow®OBDII Direct Fit Catalytic Converter (557914)OBDII Catalytic Converter (557914) by MagnaFlow®. Converter Configuration: Direct Fit. Position: Rear. Without Air Tube. With 1 O2 Sensor Port. Catalytic Converter Overall Length: 35.5". If your car needs replacement, install one that...$760.00
- MagnaFlow®OBDII Direct Fit Catalytic Converter (4551038)OBDII Catalytic Converter (4551038) 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...$1,778.00
- MagnaFlow®OBDII Direct Fit Catalytic Converter (5451445)OBDII Catalytic Converter (5451445) by MagnaFlow®. Converter Configuration: Direct Fit. Position: Front. Without Air Tube. Without O2 Sensor Port. Catalytic Converter Overall Length: 14.875". If your car needs replacement, install one...$1,480.00
- MagnaFlow®OBDII Direct Fit Catalytic Converter (5451446)OBDII Catalytic Converter (5451446) by MagnaFlow®. Converter Configuration: Direct Fit. Position: Rear. Without Air Tube. Without O2 Sensor Port. Catalytic Converter Overall Length: 12.5". If your car needs replacement, install one that...$1,461.00
- MagnaFlow®OBDII Direct Fit Catalytic Converter (5451650)OBDII Catalytic Converter (5451650) 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...$2,969.00
- MagnaFlow®OBDII Direct Fit Catalytic Converter (5451217)OBDII Catalytic Converter (5451217) 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...$1,516.00
- MagnaFlow®OBDII Direct Fit Catalytic Converter (4481515)OBDII Catalytic Converter (4481515) 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...$1,239.00
- MagnaFlow®OBDII Direct Fit Catalytic Converter (4561333)OBDII Catalytic Converter (4561333) 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...$1,159.00
- MagnaFlow®OBDII Direct Fit Catalytic Converter (4481204)OBDII Catalytic Converter (4481204) 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...$900.00
- MagnaFlow®OBDII Direct Fit Catalytic Converter (5461333)OBDII Catalytic Converter (5461333) 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...$1,272.00
- MagnaFlow®OBDII Direct Fit Catalytic Converter (5461396)OBDII Catalytic Converter (5461396) 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...$1,565.00
- MagnaFlow®OBDII Direct Fit Catalytic Converter (5461227)OBDII Catalytic Converter (5461227) 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...$1,512.00
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The Buick 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.