LS1 Spring Seats (733310-16)

Hardened machined steel valve spring seats for LS1 valve springs (PN 733305-16). Designed to properly locate the valve springs and prevent cylinder head wear. For 0.675" ID valve springs. 1.270" OD, 0.525" ID, 0.035" thick, 0.145" shoulder height. Sold in sets of 16.