National 710043 Drive Axle Shaft Seal - Front Left

Drive Axle Shaft Seal for Front Left Applications

The National 710043 drive axle shaft seal is built for front left driveline service where a precise seal is needed at the axle shaft. Made from nitrile and finished with Redicoat, this oil seal is sized for specific Ford, Mazda, and related front suspension applications.

National has supplied sealing solutions for more than 75 years, and the 710043 reflects that focus with application-specific dimensions and modern sealing design for today’s vehicles. This part cross-references SKF 12925 for the same application.

Key Features

• Part number: 710043
• Drive axle shaft seal / oil seal for driveline and axle service
• Nitrile sealing material for dependable contact at the shaft
• Inside diameter: 1.301 in. / 33.050 mm
• Outside diameter: 2.625 in. / 66.680 mm
• Thickness/width: 0.315 in. / 8.000 mm
• Housing bore: 2.620 in. / 66.550 mm
• Redicoat finish: Yes
• Series: 710000

Detailed Description

National 710043 is a front left drive axle shaft seal engineered for vehicles using Spicer 35, Spicer 44, or Spicer 50.5 axle configurations, depending on application. It is a direct-fit oil seal for select Ford F-150, Ford F-250, Ford Bronco, Ford Ranger, Ford Explorer, Ford F-350, Ford F-100, Mazda B4000, and Mazda Navajo front suspension setups. The seal dimensions and nitrile construction support proper fit at the housing bore and shaft interface, helping maintain a clean sealing surface in axle service.

Use National 710043 when servicing front left axle seal locations on 1980-1998 Ford F-250, 1980-1996 Ford F-150, and 1990-1997 Ford Ranger applications, along with other listed Ford and Mazda models. The part number 710043 is also commonly referenced in axle seal replacement searches for these vehicles.

What This Seal Helps Address

• Gear oil seepage at the front left axle shaft
• Contamination entering the axle housing through a worn seal
• Leak-related fluid loss around the drive axle shaft
• Seal wear from age, mileage, or repeated suspension service
• Replacement needs during front differential or axle maintenance

Installation Notes and Tips

Verify shaft diameter, housing bore, and axle configuration before installation. This seal is listed for front left positions only and must match the vehicle’s ring gear and axle type notes, including Spicer 35, Spicer 44, or Spicer 50.5 applications where specified. Clean the bore and shaft sealing surface thoroughly before pressing the seal into place, and inspect the axle shaft for grooves or damage that could affect sealing performance.

Quality Assurance

National has focused on premium sealing products for more than 75 years and continues to develop sealing solutions for current vehicle platforms. The 710043 is part of that sealing lineup and is built to meet the dimensional requirements of the listed applications.

• Fits 1980-1998 Ford F-250, front left, with 9 in. ring gear; with Spicer 50.5 axle; independent front suspension
• Fits 1998 Ford F-250, front left, with 8.5 in. ring gear; with Spicer 44 axle; with HD axle; independent front suspension
• Fits 1980-1996 Ford F-250, front left, with 8.5 in. ring gear; with Spicer 44 axle; with HD axle; independent front suspension
• Fits 1997 Ford F-250 HD, front left, with 8.5 in. ring gear; with Spicer 44 axle; independent front suspension
• Fits 1997 Ford F-250 HD, front left, with 9 in. ring gear; with Spicer 50.5 axle; independent front suspension
• Fits 1990-1997 Ford Ranger, front left, with 7.59 in. ring gear; with Spicer 35 axle; independent front suspension
• Fits 1994-1997 Mazda B4000, front left, with 7.59 in. ring gear; with Spicer 35 axle; independent front suspension
• Fits 1980-1996 Ford Bronco, front left, with 8.5 in. ring gear; with Spicer 44 axle; independent front suspension
• Fits 1980-1996 Ford F-150, front left, with 8.5 in. ring gear; with Spicer 44 axle; independent front suspension
• Fits 1991-1994 Ford Explorer, front left, with 7.59 in. ring gear; with Spicer 35 axle; independent front suspension
• Fits 1991-1994 Mazda Navajo, front left, with 7.59 in. ring gear; with Spicer 35 axle; independent front suspension
• Fits 1980-1985 Ford F-350, front left, with 9 in. ring gear; with Spicer 50.5 axle; independent front suspension
• Fits 1980-1983 Ford F-100, front left, with 8.5 in. ring gear; with Spicer 44 axle; independent front suspension