4.160 MLS Head Gasket .045 - SBC Brodix

The 4.160 MLS Head Gasket .045 - SBC Brodix (Model C5402-045) is a precision cylinder head gasket engineered for serious small-block Chevy builds where Brodix aluminum heads are in service. Built for engine builders and performance mechanics who demand reliability under sustained high RPM and boost conditions, this multi-layer steel gasket serves as the critical seal between the cylinder head and block, preventing combustion gases, oil, and coolant from breaching the gasket interface. Whether you're assembling a race engine, street performance build, or high-compression application, proper head gasket selection is non-negotiable for longevity and peak power delivery.

This gasket features multi-layer steel (MLS) construction with a 0.045-inch compression thickness and is sized to match the 4.160-inch bore of Brodix cylinder heads, ensuring precise fit and optimal clamp load distribution across the sealing surface. The MLS design incorporates alternating steel and elastomer layers that distribute clamping force more evenly than traditional composite gaskets, reducing hot spot stress and improving sealing integrity across thermal cycles and pressure spikes. The 0.045-inch thickness is engineered to work within the specific head and block deck height tolerances of small-block Chevy platforms, maintaining proper combustion chamber volume and avoiding piston-to-head clearance issues—critical variables that directly impact compression ratio, detonation margin, and overall engine stability.

Mechanics and engine builders installing Brodix aluminum heads on small-block Chevy applications will find this gasket essential for proper assembly. It is compatible with standard SBC stud kits and torque specifications when following Brodix head manufacturer guidelines; always verify deck height and block surface finish before installation to confirm proper clamping load. This is a per-gasket unit sale, so confirm your engine configuration requires only one before adding to cart. Proper installation—including clean deck surfaces, correct fastener torque sequences, and adherence to thermal cycle warm-up procedures—ensures years of dependable operation in street, strip, or race environments.