Dorman 674-373 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 and/or cracking Leak-resistant for long-lasting performance A rigorous quality inspection has been undertaken to ensure that this part conforms to product standards Original Equipment (OE) number: F57Z9431A, F77Z 9431-AA