Dorman 674-850 Exhaust Manifold with Integrated Catalytic Converter (Non-CARB Compliant) 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: 12581992, 18190RCAA00, 18190RCAL00, 18190RGLA00