LuK Differential Bearing Kit for Rear Axles

The LuK GDK325-MK is an axle differential bearing and seal kit for rear applications on select Chevrolet and GMC trucks, vans, and chassis-cab models. It provides OE-quality bearings selected for the specific transmission or differential repair application, helping restore proper operation in the rear axle assembly.

• Part number: GDK325-MK
• Part type: axle differential bearing and seal kit
• OE-quality bearing components selected for the application
• Rear position fitment only
• Cross-references SKF SDK325-MK and 4620043100

Fitment Details

• Fits 1988 Chevrolet C2500, rear, 10.5" 1st Design
• Fits 1988 Chevrolet C3500, rear, 10.5" 1st Design
• Fits 1988 Chevrolet G20, rear, 10.5" 1st Design
• Fits 1988 Chevrolet G30, rear, 10.5" 1st Design
• Fits 1988 Chevrolet K2500, rear, 10.5" 1st Design
• Fits 1988 Chevrolet K3500, rear, 10.5" 1st Design
• Fits 1988 Chevrolet P20, rear, 10.5" 1st Design
• Fits 1988 Chevrolet P30, rear, 10.5" 1st Design
• Fits 1988 Chevrolet R20, rear, 10.5" 1st Design
• Fits 1988 Chevrolet R30, rear, 10.5" 1st Design
• Fits 1988 Chevrolet V30, rear, 10.5" 1st Design
• Fits 1988 GMC C2500, rear, 10.5" 1st Design
• Fits 1988 GMC C3500, rear, 10.5" 1st Design
• Fits 1988 GMC G2500, rear, 10.5" 1st Design
• Fits 1988 GMC G3500, rear, 10.5" 1st Design
• Fits 1988 GMC K2500, rear, 10.5" 1st Design
• Fits 1988 GMC K3500, rear, 10.5" 1st Design
• Fits 1988 GMC P2500, rear, 10.5" 1st Design
• Fits 1988 GMC P3500, rear, 10.5" 1st Design
• Fits 1988 GMC R2500, rear, 10.5" 1st Design
• Fits 1988 GMC R3500, rear, 10.5" 1st Design
• Fits 1988 GMC V3500, rear, 10.5" 1st Design
• Fits 1975-1987 Chevrolet G20, rear, 10.5"
• Fits 1975-1987 Chevrolet G30, rear, 10.5"
• Fits 1975-1987 Chevrolet P20, rear, 10.5"
• Fits 1975-1987 Chevrolet P30, rear, 10.5"
• Fits 1987 Chevrolet R20, rear, 10.5"
• Fits 1987 Chevrolet R30, rear, 10.5"
• Fits 1987 Chevrolet V20, rear, 10.5"
• Fits 1987 Chevrolet V30, rear, 10.5"
• Fits 1979-1987 GMC G2500, rear, 10.5"
• Fits 1979-1987 GMC G3500, rear, 10.5"
• Fits 1979-1987 GMC P2500, rear, 10.5"
• Fits 1979-1987 GMC P3500, rear, 10.5"
• Fits 1987 GMC R2500, rear, 10.5"
• Fits 1987 GMC R3500, rear, 10.5"
• Fits 1987 GMC V2500, rear, 10.5"
• Fits 1987 GMC V3500, rear, 10.5"
• Fits 1975-1986 Chevrolet C20, rear, 10.5"
• Fits 1975-1986 Chevrolet C30, rear, 10.5"
• Fits 1975-1986 Chevrolet K20, rear, 10.5"
• Fits 1977-1986 Chevrolet K30, rear, 10.5"
• Fits 1979-1986 GMC C2500, rear, 10.5"
• Fits 1979-1986 GMC C3500, rear, 10.5"
• Fits 1979-1986 GMC K2500, rear, 10.5"
• Fits 1979-1986 GMC K3500, rear, 10.5"
• Fits 1975-1978 GMC G25, rear, 10.5"
• Fits 1975-1978 GMC G35, rear, 10.5"
• Fits 1973-1974 GMC G25/G2500 Van, rear, 10.5"

What This Kit Helps Address

• Rear differential bearing noise
• Wear-related bearing roughness
• Service needs during differential rebuilds
• Restoration work on older Chevrolet and GMC rear axles
• Replacement of worn OE-style bearing components

Installation Notes

Confirm rear axle identification before ordering, including the 10.5" 1st Design note where listed. This kit is for rear applications only and should be matched to the exact vehicle year, make, model, and axle configuration shown in the fitment data. Professional differential setup is recommended after bearing service to verify proper assembly and gear operation.

Quality Assurance

LuK selects OE-quality components for each specific transmission or differential application, and this kit is built around that application-specific approach. The GDK325-MK is intended for professional repair work on compatible Chevrolet and GMC rear axle applications.