GM 7-layer head gasket ZR1/LS9 CTSV/LSA ZR1/LSA or for any supercharged 6.2l LS engine.
Chevrolet Performance Multilayer Head Gasket for LS9 engines, can also be used with LS3, LS2 and 6.0 iron blocks. These are possibly THE best gaskets available for engines in the 4.00"-4.080" bore range.
4.100" bore, .055" compressed thickness, 7 layer
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