SKF 18878 Transfer Case Output Shaft Seal - Front

SKF Transfer Case Output Shaft Seal 18878

SKF 18878 is a transfer case output shaft seal built for vehicles that need reliable sealing at the transfer case output. With a polyacrylate sealing surface and precise dimensions, it helps maintain proper lubricant retention while keeping dirt and moisture out of the transfer case assembly.

• Transfer case output shaft seal for driveline sealing service
• Polyacrylate sealing surface type for application-specific sealing performance
• Dimensions: 1.889 shaft diameter, 2.677 outside diameter, 0.512 width
• Direct replacement style for select Chevrolet, GMC, Cadillac, Saturn, and Oldsmobile applications
• SKF engineered seal construction backed by long-running sealing expertise

Application Details

This SKF transfer case output shaft seal is used on a wide range of 1997-2010 vehicles, including Chevrolet Silverado, Tahoe, Suburban, Avalanche, and GMC Sierra, Yukon, and related platforms. It also covers select Cadillac Escalade, Escalade ESV, and Escalade EXT models, plus Saturn Vue and several S10/Jimmy/Sonoma/Bravada applications. Part number 18878 is listed for multiple New Process transfer case configurations, making fitment verification important before installation.

This part cross-references 22441 and 12547466 for the same application.

What This Seal Helps Address

• Transfer case fluid seepage at the output shaft
• Contamination entering the transfer case through a worn seal
• Driveline leaks that leave residue around the transfer case housing
• Seal wear from age, heat, and normal shaft movement
• Service replacement for vehicles showing transfer case output seal failure

Installation Notes and Tips

Confirm the transfer case model and shaft dimensions before installation. Inspect the output shaft surface for grooves, scoring, or corrosion that could affect sealing performance. Clean the sealing bore thoroughly and install the seal squarely to avoid distortion. Verify fluid level after service and check for leaks during a road test.

Quality Assurance

SKF has a long history in seal design and manufacturing, including early integrated shaft seal development and continued refinement of bonding methods and material selection. SKF seals are produced to defined specifications and quality standards for consistent fit and service life.