4.200 MLS Head Gasket .040 - SBC BRO DB2000

The 4.200 MLS Head Gasket .040 - SBC BRO DB2000 by Cometic Gaskets is a precision-engineered sealing solution purpose-built for small-block Chevrolet engines undergoing serious performance modification. Whether you're rebuilding a stroker motor, upgrading to a higher-compression cylinder head, or tuning for peak horsepower, a quality head gasket is foundational to engine reliability and longevity. This gasket bridges the critical interface between your cylinder head and engine block, containing combustion pressure and coolant circulation while maintaining dimensional integrity under extreme conditions.

Cometic's multi-layer steel (MLS) construction delivers superior sealing performance compared to traditional composite gaskets, especially in high-boost or nitrous applications where pressure spikes demand absolute reliability. The .040-inch thickness is precisely calculated to maintain correct piston-to-valve clearances and combustion chamber volume in ported or milled heads, ensuring your compression ratio and ignition timing stay optimized. MLS gaskets resist blow-by, coolant leakage, and thermal cycling fatigue—critical advantages when you're running elevated boost levels or extended high-RPM sessions. The 4.200-inch bore diameter matches the Brodix DB2000 cylinder head port pattern, guaranteeing OEM-quality fitment without guesswork or custom machining.

Street rodders, weekend drag racers, and engine builders restoring or modifying small-block Chevrolet platforms will recognize Cometic as the industry standard for precision gasket engineering. Installation requires proper torque sequencing and quality fasteners to achieve full gasket compression and seal integrity; follow your head bolt specifications and OEM procedures for best results. This gasket is ideal for any SBC engine featuring Brodix DB2000 cylinder heads—whether carbureted, fuel-injected, naturally aspirated, or forced-induction. Pairing this gasket with a professional machine shop head gasket surface finish and OEM-correct bolt tension ensures thousands of reliable miles of peak performance.