SBC Head Gasket Set (pr) 4.125in Bore .039

The Edelbrock SBC Head Gasket Set (pair) 4.125in Bore .039 is a precision-engineered cylinder head gasket assembly designed specifically for small block Chevy engines requiring exact bore and compression specifications. This pair of gaskets features a steel core laminate construction rated at .039 inch compression thickness, delivering the durability and sealing reliability demanded in both street and performance applications where proper compression ratio and cylinder sealing are non-negotiable.

The 4.125 inch bore diameter matches small block Chevy applications requiring this specific dimension, while the steel core laminate design provides superior heat transfer and consistent clamp load retention across engine operating cycles. The .039 inch compression thickness is critical for maintaining the correct static compression ratio—a factor that directly affects combustion efficiency, peak cylinder pressure, and engine response. Proper gasket thickness ensures adequate sealing without compromising combustion chamber volume or requiring custom machining to cylinder head or block surfaces.

This gasket set serves builders and technicians who need exact specification replacement or original equipment gaskets for small block Chevy rebuild and restoration work. Whether performing a complete engine overhaul, addressing a blown head gasket, or building an engine to precise compression targets, matching bore diameter and thickness specification is essential to avoid compression loss, coolant leakage, or combustion leakage that undermines engine performance and reliability. The pair format provides both gaskets needed for a complete cylinder head installation.