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

BTR SMALL BORE 7 LAYER HEAD GASKETS - 3.940" BORE - .055" THICKNESS - SOLD IN PAIRS - BTR973010-2 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 HEA