BTR Small Bore Head Gasket - 3.940" Bore - .055" Thickness

BTR SMALL BORE 7 LAYER HEAD GASKET - 3.940" BORE - .055" THICKNESS - SOLD INDIVIDUALLY - BTR973010 These small bore, seven layer MLS head gaskets from BTR utilize the same sealing technology found in the ever popular LS9 gasket. This is the perfect choice If you have a 4.8 or 5.3 LS and want to turn the boost all the way up! Install tab towards front & added coolant passages to the rear WILL NOT WORK WITH A TRICK FLOW FAST AS CAST LS1 H