Sierra International Manifold Spacer 3in 18-1949. The 3" spacer is compatible with Ford Small Block V-8 (302 to 351 cubic inches) GM Big Block V-8 (454 cubic inches) and GM Small Block (305 to 350 cubic inches) V8 engines. The 18-1949 Manifold Spacer...
Sierra International Manifold Spacer 3in 18-1949. The 3" spacer is compatible with Ford Small Block V-8 (302 to 351 cubic inches) GM Big Block V-8 (454 cubic inches) and GM Small Block (305 to 350 cubic inches) V8 engines. The 18-1949 Manifold Spacer...