A-Premium 9.75-inch Rear Differential Cover — Direct-Fit with Gasket & Internal Magnet

The A-Premium 9.75-inch ring gear rear differential cover is a direct-fit replacement cover with included gasket and internal magnet designed for specific Ford and Lincoln rear axles without a limited-slip differential.

This heavy-duty replacement differential cover is engineered to restore a sealed, leak-free housing, protect internal gears from debris and help trap metal particles with an integrated magnet. It’s manufactured to match the bolt pattern and ring gear diameter of many Ford F-150, E-150, Expedition, Transit, Lincoln Navigator and related models listed below, and ships with a precisely cut gasket for a proper seal.

Will this cover fit my vehicle’s rear differential?

Fit depends on two critical factors: ring gear diameter and whether the axle uses a limited-slip differential. This cover fits 9.75-inch ring gears only and is not compatible with 8.8-inch or 10.25-inch units, and it is intended for open differentials (no limited-slip).

• Fits ring gear: 9.75 inches (confirm measuring your current ring gear).
• Not compatible with limited-slip differential (LSD) units.
• Reference OEM part numbers: BL3Z4033C, F75Z4033AA, 697705, 111106.

Which model years and vehicles are supported?

The cover is compatible with a broad range of Ford and Lincoln trucks and vans across multiple years. Always cross-check the vehicle, axle type and ring gear size before purchasing to avoid fitment issues.

• Ford F-150: 1997–2019 (includes Heritage 2004 and Lobo 1997–2010).
• Ford E-150/Econoline and E-150 Club Wagon: select years 1997–2006.
• Ford Expedition and Transit 150/250/350 variants: specified model years 1997–2001 and 2015–2017 respectively.
• Lincoln models: Navigator 1998–2002, Blackwood 2002, Mark LT 2006–2014.

What comes in the box and what do I need to install it?

The package contains the A-Premium rear differential cover and a pre-cut gasket. Bolts are not included, so plan to reuse factory bolts if in good condition or purchase the correct-length ring gear cover bolts separately.

• Included: differential cover and gasket; internal magnet built into the cover.
• Not included: differential cover bolts (12 bolt holes on the flange).
• Installation tip: drain fluid, clean mating surfaces, install gasket, tighten bolts to torque spec, refill with correct gear oil.

How does the built-in magnet and gasket improve maintenance?

The integrated magnet captures abrasive metal particles before they circulate, reducing wear risk to gears and bearings. The supplied gasket helps ensure a reliable seal to prevent fluid leaks and contamination.

• Magnet location: inside the cover near the bottom to collect settled ferrous debris.
• Gasket: pre-cut to match cover flange for consistent sealing performance.
• Maintenance: inspect magnet when changing gear oil and replace gasket when re-installing.

Who is this for: This A-Premium differential cover is intended for vehicle owners, DIY mechanics and professional technicians who need a direct-fit replacement for 9.75-inch open rear differentials on specified Ford and Lincoln models. It’s best for customers who require a durable cover with a built-in magnet and a supplied gasket, and who can verify ring gear diameter and differential type before ordering. If you need bolts included or have a limited-slip differential, choose a model designed for that setup or source the required hardware separately.