Dorman 674-708 Exhaust Manifold Kit Direct replacement, exact-fit kit replaces the vehicle's factory installed exhaust manifold Cast iron or stainless tubular construction protects against warping or cracking Leak-resistant for long-lasting performance A rigorous quality inspection has been undertaken to ensure product standards Original Equipment (OE) numbers: 4L1Z9430A, 9L3Z9430B, 9L3Z9430E