Sierra 18-8502 Exhaust Manifold Mounting Kit GM Small Block

• OMC exhaust manifold mounting kit
• For OMC GM 305 and 350 CID marine engines from 1979-1989
• Used with Sierra 18-1931-1; 18-1902; 18-1903; and 18-1986-1 manifolds
• Includes exhaust manifold to head gasket; six manifold mounting studs; washers; and nyloc nuts
• Replaces Osco 244-MK
• Replaces Sierra 18-8550

Fits: •OMC Gm Small Block V8 305-350 cu. in. ( 1979-89 ) OMC/Volvo GM Small Block 305-350 cu. in. •Use with: Manifolds 18-1931-1; 18-1902 & 18-1903; 18-1986. Includes mounting studs and hardware