Ford Racing Sleeves M-6012-C351 Rebuild your Ford block with Ford Racing cylinder bore sleeves. These perfect-fit service replacements are available for the 302, 351, and Z351 aluminum cylinder blocks. Ford makes these sleeves in the USA and they can be cut to fit for the proper length. Don't need a whole set? That's okay--these cylinder bore sleeves are available individually, as well as in sets. Who better to help you service your block right than the builders--Ford Racing? CYLINDER SLEEVES SET OF 8 Z351 BLOCK CYLINDER SLEEVES SET