4.165 MLS Head Gasket .080 - SBC

The Cometic Gaskets 4.165 MLS Head Gasket .080 for small block Chevy is a multi-layer steel cylinder head gasket engineered to seal the combustion chamber between the cylinder head and engine block. This gasket features a 4.165-inch bore diameter and 0.080-inch compression thickness, delivering the precise fit and sealing integrity required for small block Chevy (SBC) engine applications. Cometic's multi-layer steel construction provides superior durability and pressure retention compared to traditional single-layer gaskets, making it the preferred choice for both stock and modified SBC engines.

The 0.080-inch thickness is a critical specification that affects compression ratio and head gasket clamping load requirements. Multi-layer steel gasket technology distributes compression forces more evenly across the sealing surface, reducing the risk of blow-by and coolant leakage under sustained boost or high RPM operation. The tight tolerance bore diameter ensures proper alignment with the cylinder walls and minimizes edge exposure that can compromise the seal. This gasket is engineered to maintain its integrity across repeated thermal cycles, a key performance factor in street and competition engines.

This gasket is essential for small block Chevy engine builders, street rod enthusiasts, and performance engine rebuilds. Whether assembling a stock replacement engine, a naturally aspirated performance build, or a supercharged application, the correct head gasket specification is non-negotiable for long-term reliability. The Cometic 4.165 MLS head gasket .080 is sold individually, allowing builders to purchase exactly the quantity needed for their project without excess inventory.

Cometic Gaskets has established itself as a trusted manufacturer of high-performance gasket solutions for the automotive aftermarket. Their multi-layer steel head gaskets have proven performance across thousands of street, strip, and road racing engines, making this gasket a reliable component for serious SBC engine work.