Description

GM Small Block Exhaust Manifold Mounting Kit | Sierra 18-8502

Includes exhaust manifold to head gasket & mounting hardware for OMC GM 5.0L & 5.7L marine engines from 1979-1989.

• 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