4.165 MLS Head Gasket .030 - SBC

The Cometic Gaskets 4.165 MLS Head Gasket .030 - SBC is engineered for Small Block Chevy engines that demand a precision seal under demanding operating conditions. Whether you're rebuilding a street engine, preparing a weekend warrior, or restoring a classic muscle car, this multi-layer steel gasket delivers the reliability that separates a solid build from one that fails on the dyno or the road. Head gasket failures cost time and money—this gasket eliminates that risk with proven Cometic engineering.

Built from multi-layer steel construction, the 4.165 MLS Head Gasket .030 - SBC features a 0.030-inch compression thickness that balances sealing integrity with minimal height loss, critical for maintaining correct combustion chamber volumes and compression ratios in precision-tuned builds. The 4.165-inch bore diameter is sized specifically for Small Block Chevy cylinder head applications, ensuring perfect fitment across generations of SBC platforms. Multi-layer steel gaskets excel at conforming to mating surfaces while resisting blowout under high cylinder pressures, making them the preferred choice for both naturally aspirated and forced-induction engines.

This gasket is ideal for mechanics and engine builders tackling SBC refreshes, performance upgrades, or full restorations where OEM gaskets may no longer provide a dependable seal. Installation requires proper head surface preparation and torque sequencing to cylinder head specifications—Cometic gaskets perform best on clean, flat mating surfaces with correct fastener tension. Compatible with all standard Small Block Chevy variants, it's a cost-effective insurance policy that keeps your engine sealed tight through thousands of heat cycles and high-rpm runs.