This catalytic converter with flex pipe is designed for the Toyota Tundra 4.7L from 2000 to 2004. It comes with mounting hardware and bolts for easy installation. The oxygen sensor is located post-catalyst and it is a direct replacement fitment type. The product is made by EXHAUSTED EXHAUSTS and has a 1-year manufacturer warranty. It has bolt-on and clamp-on connection features with 100% accuracy of fit. The surface finish is 100% stainless steel and it is EPA certified. The product is not a vintage part and is not a performance part. It is specifically designed for left and front placement on the vehicle. This item is not a universal fitment and cannot be used in California due to state restrictions.