SKF 18730 Differential Pinion Seal - Front

SKF 18730 Differential Pinion Seal for Ford Super Duty

SKF 18730 is a differential pinion seal built for front axle service on select Ford Super Duty trucks. It is specified with a 1.875 shaft diameter, 3.165 outside diameter, and 0.500 width, with a polyacrylate sealing surface type for controlled sealing performance in driveline applications.

Key Features

• Part number: SKF 18730
• Differential pinion seal for driveline and axle sealing service
• 1.875 shaft diameter for the specified axle interface
• 3.165 outside diameter and 0.500 width for proper housing fit
• Polyacrylate sealing surface type
• Fits front axle applications on Ford F-250 Super Duty and Ford F-350 Super Duty

Application Details

Compatible with 1999-2013 Ford F-250 Super Duty, front, Dana 60 Axle, and 2001-2013 Ford F-350 Super Duty, front, Spicer 60 Axle. This SKF 18730 seal is used in the differential pinion area to help maintain lubricant at the axle input while keeping road debris and moisture out of the assembly. For Ford F-250 Super Duty and Ford F-350 Super Duty front axle service, the part number 18730 provides a direct reference for the listed applications.

This part cross-references Ford OE number 8C3Z4L616A for the same application.

What It Helps Address

• Gear oil seepage at the differential pinion area
• Contamination entering the front axle housing
• Seal wear from age, heat, and driveline use
• Loss of sealing integrity after pinion service
• Noise or driveline concerns related to low lubricant level

Installation Notes and Tips

Verify axle type before ordering: Dana 60 Axle on Ford F-250 Super Duty and Spicer 60 Axle on Ford F-350 Super Duty. Inspect the pinion shaft, seal bore, and sealing surface for wear or scoring before installation. Clean the housing thoroughly and confirm the seal seats squarely to the specified dimensions. Use the correct service procedure for pinion preload and axle assembly recheck after installation.

Quality Assurance

SKF has a long history in seal engineering and manufactures seals to specific designs using premium materials for the application and operating environment. The brand’s sealing products are built to established quality standards for durability and safety in automotive service.