Marine Stainless Core Head Gasket WithSteam Holes Suit SB Chev 400, 4.200" Bore, .039" Compressed Thickness

PERMATORQUE MARINE HEAD GASKETS
Fel-Pro PermaTorque marine head gaskets use gasket core and combustion armors made of 300 Series stainless steel to resist rust and corrosion. They feature anti-stick surface coatings to improve micro-sealing, rubber/fiber facing material reinforced with KEVLAR to minimize torqueloss, and Printoseal elastomeric sealing beads (where required) for positive coolant sealing.