Gasket - Ford 9in Center Section

The Strange Gasket for Ford 9-inch Center Section (part number H1111S) is a precision differential case gasket engineered to seal the center section of Ford 9-inch rear axles. This 0.045-inch thick laminated gasket combines a steel core with composite facing material to create a reliable seal under the extreme pressures and temperatures encountered in the differential housing.

The steel core laminate construction delivers superior durability compared to standard paper gaskets, resisting deformation and fluid seepage over extended use. The 0.045-inch thickness is engineered specifically for Ford 9-inch case geometry, ensuring proper seating without over-compression that could damage mating surfaces. This precise specification maintains critical clearances within the differential assembly while preventing oil loss that would compromise lubrication and bearing life.

This gasket serves technicians performing differential repair, rebuilding, or seal replacement on Ford 9-inch equipped vehicles—including classic hot rods, performance street cars, and restored trucks. Anyone disassembling the center section for gear oil changes, limited-slip servicing, or bearing replacement will need a fresh gasket to prevent leaks and maintain proper differential function during reassembly.

Ford 9-inch differentials remain popular in custom and performance applications due to their strength and tuning potential. Using the correct gasket specification—rather than generic substitutes—ensures a secure seal that holds up under the load and heat generated by modified powertrains and aggressive driving. Strange's reputation in high-performance differential components makes this gasket a reliable choice for serious builds.