Sierra 18-1949 Manifold Spacer - 3"

Sierra's 18-1949 Manifold Spacer is 3" in size. This manifold 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). Can be used with Sierra's 18-1898 Manifold, 18-1997-1 Manifold, 18-1998-1 Manifold, and 18-4258 Pipe Plug. Replaces Barr CM 20-0097, GLM 56030, Mallory 9-40130, and Osco 994-S3.