SBF BBF Distributor Hold Down Clamp Replacement for Ford Small Block & Big Block - 289, 302, 351W, 351C, 400, 429, 460, Mustang 5.0L (NOT FE). For use on Ford Small Block & Big Block 289, 302, 351W, 351C, 400, 429, 460, Mustang 5.0L V8. Does NOT fit FE engines. Includes 1x hold-down clamp, 1x 5/16-18x3/4" hex bolt. Bolt is made of 10.9 Grade hardened steel and zinc-coated.