Big Block Chevrolet tubular head dowel, 0.638`` / 0.639`` O.D. by ½``. Packaged two per set. These hard to find dowel pins are precision machined then case hardened for accurate alignment in engine assembly.
Dowel pins are precision machined and case hardened for accurate head alignment. 2 per set. 5/16`` x 5/8``. These cylinder head dowel pins fit Chevy Small Block, Pontiac & Mopar 318-360.