SKF 18771 Transfer Case Output Shaft Seal - Front, Rear or Rear Forward

SKF 18771 Transfer Case Output Shaft Seal

SKF 18771 is a transfer case output shaft seal built for applications that need reliable fluid retention and contamination control. It uses a Vamac/Teflon sealing surface and is sized for a 1.875-inch shaft diameter, with a 2.754-inch outside diameter and 0.500-inch width.

Key Features

• Transfer case output shaft seal for drivetrain sealing service
• Vamac/Teflon sealing surface type for demanding transfer case environments
• 1.875-inch shaft diameter, 2.754-inch outside diameter, and 0.500-inch width
• Designed by SKF, a seal manufacturer with long-standing OE-style engineering experience
• Cross-references Bosch 16149 and 16623 for the same application

Product Details

SKF 18771 is engineered for transfer cases where the output shaft seal must keep lubricant inside the housing while helping block dirt, water, and road debris. SKF has a long history in seal design, and this part reflects that focus with premium materials and application-specific construction. It is a direct-fit style seal for a wide range of trucks and SUVs, including Ford F-150, Chevrolet Silverado 1500, and Jeep Cherokee applications listed below.

Fits 1998-2014 Ford F-150, Warner Transfer Case; fits 2003-2012 Chevrolet Silverado 1500, Borg Warner Trans.; and fits 1986-1990 Jeep Cherokee, front, New Process 242. The SKF 18771 part number is also used across many other transfer case applications, including Expedition, Navigator, Tahoe, Yukon, and Bronco models.

Common Problems This Seal Can Address

• Transfer case fluid seepage at the output shaft
• Contamination entering the transfer case housing
• Wet underbody areas near the transfer case tail section
• Seal wear from age, heat, and drivetrain movement
• Service replacement during transfer case maintenance or rebuild work

Installation Notes and Tips

Verify shaft diameter, outside diameter, and seal width before installation. Inspect the output shaft surface for grooves, scoring, or corrosion, since surface damage can shorten seal life. Clean the seal bore and shaft area thoroughly, and confirm the transfer case type listed in the fitment notes before ordering. This part is commonly used on Borg Warner, New Process, and Warner transfer case 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, and SKF 18771 follows that same focus on durability, lubricant retention, and contamination resistance.