PermaTorque MLS Head Gasket Suit BB Chev, 4.640" Bbore, .041" Compressed Thickness, One Coolant Hole Per End

• Fits Mark IV Block
• Pre-1971 blocks may require modifications
• Fits Gen V Block
• Fits Gen VI Block
• One coolant holes per end.
• Three lower coolant holes
• Stainless Steel Core suitable for Marine applications

Federal-Mogul's Fel-Pro PermaTorqueMLS multi-layer steel (MLS) head gaskets are designed and manufactured to handle the special needs of big power engines - supercharged, nitrous injected or naturally aspirated. PermaTorqueMLS head gaskets provide the following benefits:

• MLS maintains contact pressure between the cylinder head and block.
• Seals combustion, oil and coolant despite extreme horizontal and vertical motion between head and block
• Distributes clamping loads strategically across the entire cylinder head for optimised sealing.

Fel-Pro PermaTorqueMLS is the ultimate in combustion sealing.