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The MagnaFlow 452843 is a direct-fit manifold catalytic converter for the 2001-2005 Lexus IS300 3.0L and 2000-2005 Lexus GS300 3.0L. It is California Grade and CARB compliant, so it is legal in California and CARB-restricted states, which many aftermarket converters are not. It is built from stainless steel with mandrel-bent tubing and a single laser-fusion weld to reduce leaks, and it bolts on without cutting or welding. It interchanges with OE parts 17140-46030 and 17140-46080, and the box includes two flat ring gaskets and two flange gaskets.
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Owners of IS300 and GS300 models generally report a clean bolt-on fit and no check engine light after installation. The main complaints are the cost of a CARB-legal manifold cat and the effort of the job on older, rusted exhaust studs.
This is a direct-fit manifold catalytic converter for the 2001-2005 Lexus IS300 3.0L and the 2000-2005 Lexus GS300 3.0L. It is a California Grade, CARB compliant replacement part. It is designed to meet or exceed California Air Resources Board requirements and has undergone additional testing for legal use in California and CARB restricted states on the listed vehicles.
The converter is made of highly corrosion resistant stainless steel with free-flowing mandrel-bent tubing. A single laser fusion weld replicates the OE design and reduces the possibility of a leak. The compact, low-mass design allows for greater thermal efficiency. The design was developed with 3D scanning systems so that it fits and functions like the original equipment.
Installation requires no cutting or welding. It can be installed with the proper tools.
