Description
Hastings Piston Ring Set 139-30 is a popular, high-quality, and reliable product from Hastings Manufacturing, which has specialized in piston rings since 1915. This ring set is designed for 4.030" bore engines—notably Mopar 360, Small Block Chevy (327, 350), and various Ford engines (302, 351W, 400)—and are suitable for stock replacement to moderate performance applications.