InMotion WS7044NA Differential Pinion Seal - Rear or Rear Outer

Differential Pinion Seal for Ford 9-Inch Applications

The InMotion WS7044NA differential pinion seal is built for rear differential service on a wide range of Ford, Lincoln, and Mercury vehicles equipped with a 9-inch ring gear or listed Ford axle configurations. It helps maintain a secure seal at the pinion area to keep contaminants out and gear oil in.

• Direct-fit differential pinion seal for rear axle service
• Helps block moisture and debris from entering the differential
• Supports leak control at the pinion seal location
• Fits many classic Ford, Lincoln, and Mercury rear axle applications
• InMotion part number WS7044NA for catalog and service reference

Detailed Fitment and Application

Compatible With rear differential applications on 1957-1986 Ford Bronco, E-100 Econoline, E-150 Econoline, E-150 Econoline Club Wagon, F-100, F-150, Mustang, Thunderbird, LTD, and Econoline models, plus Lincoln Continental and Versailles and Mercury Colony Park, Cougar, Grand Marquis, Marquis, Marauder, Montego, Monarch, Capri, Villager, and Monterey applications listed with 9-inch ring gear or Ford axle notes. This InMotion differential pinion seal, WS7044NA, is intended for vehicles where the pinion seal must maintain a tight barrier under normal driveline operation.

For classic Ford F-100 rear axle service, Ford Mustang rear differential repair, or Mercury Cougar and Thunderbird pinion seal replacement, WS7044NA provides a service part option matched to the listed axle configurations. The seal is engineered from quality materials to help preserve differential integrity during everyday driving and off-road use.

• Rear differential oil seepage at the pinion area
• Contamination entering the differential housing
• Seal wear on 9-inch ring gear rear axle setups
• Maintenance needs on classic Ford, Lincoln, and Mercury driveline systems
• Noise or driveline issues associated with low gear oil caused by leakage

Installation Notes

Verify axle configuration, ring gear size, and position before installation. This part is listed for rear and rear outer applications, including notes such as 9-inch ring gear, Ford axle, 9.375-inch ring gear, and 0.455-inch width where specified. Inspect the pinion yoke and sealing surface for wear before installing the new seal.

Quality Assurance

InMotion manufactures this seal with precision-focused construction and durable materials to support reliable differential sealing in service applications. Part number WS7044NA is cataloged for the listed fitments and application notes.