For LS & LT style heads with PSI springs and OEM guides
Fits LS & LT1/L83 for use with:
PSI-LS1511 spring
KAT-4678 retainer or KAT-7128
GMP-12533586 intake valve seal
GMP-12457652 exhaust valve seal
Or KAT-7481 seals for intake & exhaust
.068 thick
SOLD INDIVIDUALLY - 16 REQUIRED
*** These spring seats also work with the new design LS7/LT1 CHE Bronze guides ***
