Sierra 18-1902 OMC Starboard Exhaust ManifoldSierra high-quality engine parts are designed to meet OEM specifications. Fits most GM Small Block (B8) 305-350 cu.in. (1979-1989) (Starboard).Use With: 18-2949 Exhaust Manifold Gasket; 18-8502 Exhaust Manifold Mounting Kit; 18-1921 Elbow; 18-2902 Exhaust Manifold Gasket; 18-2902-9 Exhaust Manifold Gasket (Priced per Package of 2); Includes: (1) 18-0943-2 Exhaust Elbow Gasket; (1) 18-2949 Exhaust Manifold Gasket; (1) 18-710-20-2 Hose Clamp 13/16 to 1-3/4; (1) 18-0550 Plug Off Cap; Interchangeable with: OMC; 0912441; Barr; OMC-1-912441; Mallory; 9-40602; Osco; 2441; GLM; 51410;