Marine Head Gasket

The FEL-PRO Marine Head Gasket (Part #17059) is a precision cylinder head gasket engineered for Mopar RB-Series marine engines with a 4.500-inch bore. Built with a steel core laminate construction and 0.039-inch compression thickness, this gasket delivers reliable sealing in the demanding saltwater and freshwater environments where marine engines operate. For boaters relying on consistent engine performance, whether running offshore or on inland waters, a properly sealed cylinder head is non-negotiable.

The steel core laminate design provides the structural integrity needed to handle marine engine combustion pressures while resisting the corrosive effects of salt spray and moisture exposure. The 0.039-inch compression thickness is calibrated specifically for RB-Series blocks to maintain proper cylinder head clamping force and prevent blow-by that would compromise engine efficiency and longevity. This gasket is engineered to OEM specifications, ensuring it meets the exact tolerances required by Mopar marine powerplants. When reassembling cylinder heads, matching the factory gasket thickness is critical—undersized or oversized gaskets lead to poor sealing and potential catastrophic engine damage.

This replacement gasket is designed for boat owners and marine technicians performing cylinder head work on RB-Series engines. Whether you're rebuilding after extended offshore use, addressing a head gasket failure, or completing preventive maintenance on a weekend fishing boat, this FEL-PRO gasket ensures proper sealing without compromise. FEL-PRO is recognized within the marine and automotive service industry for manufacturing gaskets that meet or exceed OEM standards, making this a trusted choice for engine rebuilds where reliability directly impacts safety and performance on the water.