Sierra 18-1997-1 Universal Center Riser Exhaust ManifoldThis Sierra is a universal exhaust manifold for engines with center risers. Constructed from cast iron for maximum durability, this manifold can be used on either the port or starboard side.Application Info: Chriscraft 283, 302, 307, and 350 CID Engines.; Crusader 283 and 327 CID Engines thru 1964; 305, 307 and 350 CID Engines 1965 and later.; Daytona 200-283 and 300-327; Flagship 283, 327 and 350 CID Engines; Pacer 305, 307 and 350 CID Engines 1965 and later; MerCruiser GM 283, 305, 307, 350 CID Engines; OMC 283, 305, 307 and 350 CID Engines 1968 - 1980; Volvo 307 and 350 CID Engines; Use With: Exhaust Manifold Gasket Set: 18-0604; Exhaust Manifold Gasket: 18-2949; Exhaust Elbow Mounting Kit: 18-8536; Riser: 18-1907 and 18-1939; Manifold Spacer: 18-1949; Elbow: 18-1999; Exhaust Manifold Gasket: 18-2902; Fuel Elbow: 18-8112; Includes: Exhaust Elbow Gasket: 18-2854-1-9; Exhaust Manifold Gasket: 18-2949-9; Interchangeable With: Barr; CHV-1-83; GLM; 56230; Mallory; 9-40110; Osco; 994; HGE 1-83; ;