Tri-Y Long Tube Headers

The Doug Thorley Headers THY-563Y-LS-C are long tube Tri-Y headers engineered for the 2005-2009 Toyota 4Runner and Lexus GX470 equipped with the 4.7L V8 engine. Constructed from robust 304 stainless steel, these headers feature 1-5/8 inch primary tubes and a 2.25 inch collector, finished with a silver ceramic coating for enhanced durability and a sleek appearance. The one-piece design simplifies installation, and the headers are sold as a pair, including gaskets. These headers are designed with air injection. While they are generally a direct fit for the specified models, specific application details note that manual transmission vehicles will require a cable or hydraulic clutch linkage. Additionally, these headers are only compatible with coil spring front suspension and will not fit Heavy Duty, Big 10 Chassis, or Heavy Half models. The product does not include collector reducers, bolts, studs, catalytic converters, or motor mounts.