Manifold Spacer, GM V8

Manifold Spacer. For: GM Small Block V8 305-350 cu.in, GM Big Block V8. Use with: Elbow Gasket 18-0475-1. Premium Quality For Longer Life. Meets or exceeds manufacturer's recommended specifications. Backed by Sierra's limited lifetime warranty. For: GM Small Block V8 305-350 cu.in, GM Big Block V8 Use with: Elbow Gasket 18-0475-1 Premium Quality For Longer Life Meets or exceeds manufacturer's recommended specifications Backed by Sierra's limited lifetime warranty