These long tube headers from Doug Thorley fit the 2003-2004 Toyota 4Runner and Lexus GX470 with the 4.7L V8 engine.
The headers are a simple bolt in installation had completely replace the stock exhaust manifold and front catalytic converter. The headers run from the cylinder head and bolts to the Y pipe. URD also offers performance Y pipes as well.
Made from 304 grade stainless steel and ceramic coated in a bright silver color. Ships with all needed hardware including gaskets and includes extension harnesses for the front O2 sensors.
Removing the front catalytic converters with these headers will set a check engine light. URD offers our UNIVERSAL Rear O2 simulator to help prevent the check engine light. We offer it bundled with the headers at a discount. You can find more information on the UNIVERSAL Simulator here.
For off road use only.