BGMG 40710 Drive Axle Shaft Seal - Front or Front Left Inner

Drive Axle Shaft Seal for Ford and Mazda Applications

The FSGR 40710 drive axle shaft seal is a direct-fit sealing component for front axle service on a wide range of Ford, Mazda, and Mercury vehicles. It is used in front and front left inner positions where axle sealing is critical to keeping lubricant contained and contaminants out.

Key Features

• Drive axle shaft seal for front axle sealing applications
• Fits 1980-1999 Ford F-250, front
• Fits 1980-1998 Ford F-350, front
• Fits 1980-1996 Ford F-150, front left inner
• Fits 1991-1996 Ford Explorer, front left inner
• Fits 1990-1997 Ford Ranger, front left inner
• Fits 1990-1997 Ford Aerostar, front left inner
• Fits 1980-1996 Ford Bronco, front left inner
• Fits 1997 Ford F-250 HD, front
• Fits 1997 Ford Mercury Mountaineer, front left inner
• Fits 1994-1997 Mazda B4000, front left inner
• Fits 1994-1996 Mazda B3000, front left inner

Detailed Description

FSGR 40710 is a driveline and axle sealing part built for front axle service on Ford F-150, Ford Bronco, Ford Explorer, Ford Ranger, and related truck and SUV platforms. It also covers select Mazda B3000 and B4000 models, plus the 1997 Mercury Mountaineer, with fitment listed for front and front left inner positions. If you are replacing a leaking axle seal on a Ford F-250 or Ford F-350, this part number 40710 is listed for those front applications.

FSGR is the product line designation for this seal, and 40710 is the identifying part number used for ordering and fitment lookup. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues Addressed

• Gear oil or differential fluid seepage at the axle shaft seal
• Contamination entering the axle housing through a worn seal
• Fluid loss that can affect front axle lubrication
• Seal wear from age, mileage, or repeated drivetrain service
• Leak diagnosis on front left inner axle locations

Installation Notes and Tips

Confirm the vehicle year, make, model, and axle position before ordering. Match the seal location exactly, since this listing includes both front and front left inner applications depending on the vehicle. Inspect the axle shaft, sealing surface, and surrounding components for wear or damage before installation, and replace any parts that would prevent the new seal from seating correctly.

Quality Assurance

Use this part number 40710 when you need a replacement drive axle shaft seal for confirmed Ford, Mazda, and Mercury fitments. Verify the application against the vehicle’s front axle configuration before service.