SKF 18888 Differential Pinion Seal - Front or Rear

SKF 18888 Differential Pinion Seal

SKF 18888 is a differential pinion seal built for rear axle service where gear oil retention and contamination control matter. With a 1.875-inch shaft diameter, 3.165-inch outside diameter, and .531-inch width, it is sized for specific axle and yoke applications across Dodge, Jeep, Chevrolet, Ford, and Lincoln vehicles.

Fits 1954-1983 Dodge, Jeep, Chevrolet, Ford, and Lincoln rear axle applications listed below, including Spicer 60, Spicer 70, Dana 60, Dana 70, and 9.75-inch ring gear setups. This part cross-references Eastern Catalytic 30277 for the same application.

• Part number: SKF 18888
• Sealing surface type: Polyacrylate
• Shaft diameter: 1.875 inches
• Outside diameter: 3.165 inches
• Width: .531 inches
• Designed for rear differential pinion sealing service
• Built to retain lubricant and block road contaminants

Detailed Product Overview

SKF 18888 is a differential pinion seal engineered for axle assemblies that require a precise seal at the pinion shaft. SKF has a long history in seal design and uses application-specific materials and bonding methods to match the operating environment of the seal. For rear axle service on vehicles such as the Dodge Charger, Dodge Challenger, Jeep J20, and Ford F-350, the seal helps maintain proper lubrication at the pinion area while limiting dirt and moisture intrusion.

Vehicle coverage includes rear applications for 1966-1972 Dodge Charger and Monaco, 1970-1971 Dodge Challenger and Dart, 1974-1980 Jeep J20, 1955-1970 Ford F-250, and 1961-1970 Ford F-350. The SKF 18888 part number is also listed among common interchange references used for this application.

What This Seal Helps Address

• Gear oil leaking from the differential pinion area
• Contamination entering the axle housing through a worn seal
• Wet or oily residue around the pinion yoke
• Seal wear caused by age, heat, and drivetrain use
• Maintenance needs on rear axle assemblies with matching dimensions

Installation Notes and Tips

Confirm shaft diameter, outside diameter, and width before installation so the seal matches the axle housing and pinion yoke dimensions. Inspect the pinion yoke surface for grooves or wear before installing the new seal, since a damaged sealing surface can shorten service life. Verify axle type and notes such as Spicer 60, Spicer 70, Dana 60, Dana 70, or 9.75-inch ring gear fitment before ordering.

Compatible vehicle examples include rear applications on Dodge B150, B250, B350, D350, and W350 with Spicer 70 axle and 7290 yoke, plus Chevrolet C10 Suburban, C20 Suburban, K10 Suburban, and K20 Suburban with Spicer 60 and 60-35 axles.

Quality Assurance

SKF designs and manufactures seals to high quality standards using premium materials selected for the application and operating environment. The brand’s seal engineering background supports long service life and dependable sealing performance in driveline and axle use.