Wedge/Hemi Head Gasket

The FEL-PRO Wedge/Hemi Head Gasket (Part #1039) is a precision-engineered cylinder head gasket designed specifically for Mopar B-series and RB-series V8 engines. This gasket features a 4.590-inch bore with a 0.051-inch compression thickness and employs a steel core laminate construction—the industry standard for maintaining reliable combustion chamber sealing across wide temperature ranges and engine load cycles. Original equipment manufacturers and professional engine builders rely on this gasket's dimensional accuracy and material composition to ensure leak-free cylinder head sealing.

The steel core laminate construction provides superior durability compared to conventional single-layer gasket materials. The 0.051-inch compression thickness is precisely engineered to match the combustion chamber volume and piston-to-head clearance specifications of Mopar B/RB-series engines, directly affecting compression ratio stability and engine performance consistency. The 4.590-inch bore diameter ensures proper cylinder wall sealing across all eight cylinders without overhang or under-coverage. FEL-PRO's manufacturing processes meet OEM tolerances, making this gasket suitable for both stock restorations and performance engine builds.

This gasket is the correct choice for owners and builders working on Dodge, Plymouth, and Chrysler vehicles equipped with Mopar big-block and small-block B or RB engine families. Whether you're rebuilding a classic muscle car engine, performing routine head gasket replacement on a well-used powerplant, or assembling a restored engine for show or street use, this FEL-PRO gasket delivers the dimensional precision and material reliability required for sustained engine operation. The single-unit design simplifies installation during cylinder head mounting procedures.