InMotion WS411330N Differential Pinion Seal - Front Outer or Rear Outer

Differential Pinion Seal for Rear Outer Applications

The InMotion WS411330N differential pinion seal is built to create a secure barrier at the pinion area, helping keep contaminants out and gear oil in. It is a direct-fit sealing component for rear outer applications on select Chevrolet and GMC trucks and vans with GMC H052 or H110 differential configurations.

• Polyacrylate sealing material for durable fluid control
• Inside diameter: 2.598 in.
• Outside diameter: 3.486 in.
• Thickness: 0.5 in.
• Shaft diameter: 2.598 in.
• Housing bore: 3.481 in.

Fitment Details

Compatible with select Chevrolet C30, K30, P30, C20 Suburban, K20 Suburban, and K10 Suburban applications, plus GMC C3500, K3500, P3500, and G35/G3500 Van models. Fits 1975-1981 Chevrolet C30, rear outer, with GMC H110 Differential; Fits 1977-1981 Chevrolet K30, rear outer, with GMC H110 Differential; Fits 1975-1981 Chevrolet P30, rear outer, with GMC H110 Differential; Fits 1979-1981 GMC C3500, rear outer, with GMC H110 Differential; Fits 1979-1981 GMC K3500, rear outer, with GMC H110 Differential; Fits 1979-1981 GMC P3500, rear outer, with GMC H110 Differential; Fits 1967-1972 Chevrolet C20 Suburban, rear outer, Polyacrylate Type; Fits 1967-1972 Chevrolet K20 Suburban, rear outer, with GMC H052 Differential; Fits 1970-1972 GMC G35/G3500 Van, rear outer, Polyacrylate Type; Fits 1969-1970 Chevrolet K10 Suburban, rear outer, with GMC H052 Differential.

This part cross-references no listed interchange part numbers for the same application.

What This Seal Helps Address

• Gear oil seepage at the differential pinion area
• Contamination from dirt, road debris, and moisture
• Wear caused by compromised sealing surfaces
• Loss of differential lubricant during operation
• Service needs on aging Chevrolet and GMC rear axle assemblies

Installation Notes

Verify the differential type, shaft diameter, and housing bore before installation. Clean the sealing surface thoroughly and inspect the pinion area for wear, scoring, or damage that could affect seal performance. Confirm the vehicle application against the listed rear outer fitment and differential notes for Chevrolet C30, K30, P30, and GMC C3500, K3500, P3500 models.

Quality Assurance

InMotion manufactures this seal with precision-focused dimensions and polyacrylate construction to support reliable sealing performance in differential service.