SKF 18708 Differential Pinion Seal - Rear

SKF 18708 Differential Pinion Seal

SKF 18708 is a rear differential pinion seal built for Chrysler, Dodge, and Plymouth driveline applications that use a 9.25-inch or selected 8.75-inch ring gear setup. With a nitrile sealing surface and precise dimensions, it is made to retain gear oil at the pinion while helping keep dirt and moisture out of the axle housing.

Key Features

• Part number: SKF 18708
• Sealing surface type: nitrile
• Shaft diameter: 1.875 in.
• Outside diameter: 2.817 in.
• Width: 0.500 in.
• Rear differential pinion seal for driveline and axle service

Detailed Description

SKF has a long history in seal engineering, and this differential pinion seal reflects that focus on material selection and application-specific design. The nitrile sealing surface is suited to axle environments where consistent contact, lubricant retention, and contamination control matter. SKF 18708 is a direct-fit service part for many Dodge Ram, Dakota, Durango, B-series, and Chrysler rear axle applications, including 9.25-inch ring gear setups and select 8.75-inch ring gear configurations. This part cross-references Gates 23385 for the same application.

What It Is Used For

• Stopping gear oil seepage at the rear pinion area
• Replacing a worn or hardened pinion seal during axle service
• Addressing fluid loss around the differential yoke
• Helping reduce contamination entering the differential housing
• Restoring proper sealing on Dodge Ram 1500, Dakota, and Durango rear axles

Installation Notes and Tips

Confirm ring gear size, pinion shaft diameter, and axle configuration before installation. This seal is listed for rear position applications only. Inspect the pinion yoke surface for wear or grooves, and verify the sealing surface is clean and free of damage before assembly. For best results, match the seal to the exact axle specification shown in the fitment data, especially on Dodge Ram, Dakota, and Chrysler rear differential applications.

Quality Assurance

SKF designs and manufactures seals to specific application requirements using premium materials and controlled production standards. The brand’s seal engineering heritage dates back to the first integrated shaft seal in 1928, and SKF 18708 is built to support long service life in demanding axle environments.