4.600 MLS Head Gasket .040 - BBM

The Cometic Gaskets 4.600 MLS Head Gasket .040 – BBM (C5799-040) is specifically designed for big-block engine builders and performance enthusiasts who require a dependable, precision-engineered seal for high-compression and forced-induction applications. This multi-layer steel head gasket is ideal for street performance, drag racing, and naturally aspirated or supercharged big-block combinations where factory gaskets may not suffice.

Constructed from multi-layer steel (MLS), this gasket offers superior durability and reusability compared to traditional composite gaskets. With a .040-inch compressed thickness, it is engineered to maintain optimal combustion chamber volume and preserve the engine's intended compression ratio. The 4.600-inch bore diameter is precisely tailored for big-block applications, ensuring compatibility with modern honing and deck-finishing standards.

High-performance engine builders and experienced mechanics performing head gasket replacements on big-block platforms will find this gasket particularly beneficial. Its MLS design excels under thermal cycling and extreme pressure, effectively resisting blow-out and leakage while accommodating minor deck surface variations inherent in high-performance engine machining.