Ford 9.75" 12-Bolt Fiber Differential Cover Gasket

• Fiber differential cover gasket for Ford 9.75" 12-bolt rear axle housings

• 12-bolt pattern matches Ford 9.75" cover bolt configuration for a precise seal

• Fiber construction compresses evenly against the cover sealing rail to prevent gear oil leaks

• Sold individually; no hardware or cover included

This is a fiber differential cover gasket sized and punched for Ford 9.75" 12-bolt rear axle housings. It's a direct replacement for a leaking, damaged, or missing cover gasket on compatible Ford 9.75" axle applications, providing a reliable fiber seal between the differential cover and the axle housing sealing rail.

The Ford 9.75" rear axle is commonly found in F-150, Ford Expedition, Lincoln Navigator, and Ford Explorer Sport Trac builds — making this gasket a common service item for routine differential cover removal, fluid changes, or cover upgrades on these platforms.

This gasket is sold individually and includes no hardware, cover, or drain plug. Confirm your axle model and cover bolt pattern before ordering, and clean the cover and housing sealing surfaces thoroughly before installation for a proper seal.

Fiber Gasket Cut for the Ford 9.75" 12-Bolt Cover Pattern
This fiber differential cover gasket is punched to match the 12-bolt pattern of Ford 9.75" rear axle housings, giving you a clean, leak-resistant seal between the differential cover and the axle housing sealing rail during cover reinstallation or replacement.

Stops Gear Oil Leaks at the Cover Sealing Surface
A worn, crushed, or damaged cover gasket is one of the most common causes of gear oil seepage at the rear axle. This fiber gasket compresses evenly across the cover sealing rail to help restore a consistent seal and stop leaks without requiring RTV compound, though RTV can be used in combination depending on your preference.

What axle does this gasket fit?
This differential cover gasket is designed for Ford 9.75-inch 12-bolt rear axle housings, commonly found in Ford F-150, Expedition, Lincoln Navigator, and Explorer Sport Trac applications.

Will this fit a Ford F-150?
Yes. The Ford 9.75-inch rear axle is commonly used in many F-150 models. Verify your specific axle before ordering.

Will this fit a classic Ford 9-inch rear axle?
No. The Ford 9.75-inch is a separate, modern rear axle design and is not compatible with the classic Ford 9-inch axle.

Will this fit a GM rear axle?
No. This gasket is designed specifically for Ford 9.75-inch 12-bolt differential cover applications.

Do I need to use RTV with this gasket?
Fiber gaskets can be installed with or without RTV sealant, depending on the condition of the sealing surfaces and your preferred installation method. Always clean both mating surfaces thoroughly before installation.

What's included with this gasket?
This listing includes the fiber differential cover gasket only. Differential cover, mounting hardware, and drain plug are not included.

When would I need to replace my differential cover gasket?
A new gasket is recommended whenever the differential cover is removed for gear oil changes, inspections, repairs, or differential cover replacement to help prevent leaks.

Does this gasket work with aftermarket differential covers?
Yes, provided the aftermarket cover is designed for the Ford 9.75-inch 12-bolt axle and uses the factory sealing surface and bolt pattern.

How do I ensure a proper seal with this gasket?
Thoroughly clean the differential housing and cover sealing surfaces, remove all old gasket material and sealant, position the gasket correctly, and tighten the cover bolts evenly to the manufacturer's specifications.

Is this the right gasket for a routine differential fluid change?
Yes. Replacing the differential cover gasket during a fluid change is standard practice whenever the cover is removed.