If your '04-'06 Toyota Sienna or '04-'07 Highlander with the 3.3L V6 (non-hybrid, AWD for Sienna) is throwing a P0420 code or just failing emissions, this direct-fit catalytic converter set is what you need. It's a pair—left and right side—made from high-quality stainless steel with a high-flow design that meets OEM specs and is EPA compliant (good for most states). IMPORTANT: It is NOT CARB certified, so it CANNOT be used in California, Colorado, New York, or Maine. Please check your local laws! It's a bolt-on replacement for the original part numbers 16392 and 16394. Installation is straightforward if you're handy, but might require cutting and welding depending on rust. This should clear that check engine light, restore performance, and get you through emissions testing (where legal). Comes with a solid 5-year/50,000-mile warranty against defects. Just make absolutely sure it fits your exact model before ordering.
