BBC 4.700 Bore Head Gasket .053 Brodix Blk

The FEL-PRO BBC 4.700 Bore Head Gasket .053 Brodix Black is a precision cylinder head gasket engineered for Big Block Chevy marine engines that demand reliable combustion sealing under high-load conditions. Built with PermaTorque multi-layer steel construction, this gasket delivers the compression thickness control and bore diameter accuracy required for consistent power output and engine longevity in marine applications.

The .053-inch compression thickness and 4.700-inch bore specification are calibrated for specific Brodix Black cylinder head geometries, ensuring proper gasket crush and load distribution across the sealing surface. PermaTorque technology provides superior crush recovery and thermal stability, critical factors in saltwater and freshwater marine environments where temperature cycling and sustained RPM operation stress head gasket integrity. Multi-layer steel construction resists blow-by, maintains sealing pressure, and extends service intervals compared to single-layer gaskets.

This gasket is suited for marine engine builders, mechanics, and boat owners rebuilding or maintaining Big Block Chevy powerheads for offshore and inshore fishing vessels, performance cruisers, and commercial marine applications. Proper gasket selection by bore and compression thickness is essential—using the correct specification prevents coolant leaks, cylinder pressure loss, and potential heat damage to the block and heads.

FEL-PRO is recognized for OEM-level gasket engineering and marine-specific material science. Each gasket is individually manufactured to tolerance, ensuring consistent performance across your entire engine.