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A bolt-on replacement catalytic converter for 2002–2004 Jeep Grand Cherokee models with the 4.7L V8. It uses flange inlets and outlets, mandrel-bent stainless tubing and a spun stainless body with a single laser-fusion weld to limit leaks. The ceramic substrate sits in a compact, low-mass body that heats up quickly, and the kit includes gaskets and mounting hardware. It is the practical choice for a Grand Cherokee owner facing a failed converter who wants a factory-fit part rather than a universal weld-in unit.
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Lowest price we've seen: $666.84 on Nov 14 at Amazon. Tracked across 1 store since Nov 14.
Owners of 4.7L Grand Cherokees report the unit bolts to the factory flanges and clears the check engine light once installed. Most praise the fit and the stainless build; the main complaints are the CARB restriction and the effort of reaching the flange bolts on a rusted exhaust.
This direct-fit catalytic converter (Part #458000) is made for 2002 to 2004 Jeep Grand Cherokee models with the 4.7L V8 engine. It fits Laredo, Limited, Overland and Special Edition trims. It replaces OE parts 5208 0358AA and 5208 0378AC.
The spun body is made from 16 gauge 409 stainless steel tubing and replicates the original design, with a single laser fusion weld to minimize leaks. The tubing is mandrel-bent to keep exhaust flow free and reduce backpressure. The body is compact and low in mass, and the collector is precision stamped. 308 stainless steel MIG welds join the assembly. OE-sized barbed hangers made of 410 stainless steel help reduce noise and vibration.
Installation needs no cutting or welding and can be done with standard automotive tools. Gaskets and mounting hardware are included. The fit was developed using 3D scanning.
