Timken 2261 Engine Crankshaft Seal - Rear

Timken 2261 Rear Engine Crankshaft Seal

The Timken 2261 rear engine crankshaft seal is built for applications that need reliable oil control at the rear of the crankshaft. It is a direct-fit sealing component for select Chevrolet and GMC trucks, vans, and chassis applications, including Chevrolet C2500, C3500, K2500, K3500, and GMC C2500, C3500, K2500, K3500 rear applications.

Key Features

• V-fluoro-elastomer material for durable sealing performance
• Reinforced outer case helps resist installation damage and supports long-term durability
• Ribbed rubber inner diameter helps seal minor spindle imperfections and promotes positive seating
• Internal contamination exclusion system helps block debris that can contribute to leakage
• Vent holes allow lubricant flow around the seal lip to help reduce heat buildup
• Helix type: CCW, counter clockwise
• Dimensions: 130.35 mm outside diameter, 130.00 mm housing bore, 110.00 mm shaft diameter, 10.00 mm width

Detailed Description

Timken 2261 is an engine crankshaft seal engineered for rear-position applications where maintaining a clean, stable seal surface is critical. The seal’s precision design helps retain lubricant while limiting contaminant entry, and the reinforced outer case adds support during installation. Its ribbed inner diameter and vented construction are intended to improve seating and manage operating heat, making it a practical choice for rear crankshaft sealing service on Chevrolet and GMC platforms. This part cross-references National 325776 for the same application.

Common Problems This Seal Can Address

• Rear main oil leakage at the crankshaft
• Contamination entering the sealing area
• Seal damage during installation
• Poor sealing on minor shaft surface imperfections
• Heat-related seal wear around the lip area

Installation Notes and Tips

Verify shaft diameter, housing bore, and seal orientation before installation. The CCW helix type must match the engine application to maintain proper oil control. Clean the sealing surfaces thoroughly and inspect the crankshaft and housing for wear, scoring, or debris before fitting the seal. Confirm rear-position fitment for your vehicle before ordering.

Quality Assurance

Timken manufactures oil and grease seals with precision sealing designs and contamination control features for demanding engine service. Part number 2261 is built to Timken’s sealing standards for consistent fit and function in supported Chevrolet and GMC rear crankshaft applications.

Compatible Vehicles

• Fits 1991-2000 Chevrolet C2500, Rear
• Fits 1991-2000 Chevrolet C3500, Rear
• Fits 1996-2000 Chevrolet Express 3500, Rear
• Fits 1991-2000 Chevrolet K2500, Rear
• Fits 1991-2000 Chevrolet K3500, Rear
• Fits 1991-2000 GMC C2500, Rear
• Fits 1991-2000 GMC C3500, Rear
• Fits 1991-2000 GMC K2500, Rear
• Fits 1991-2000 GMC K3500, Rear
• Fits 1996-2000 GMC Savana 3500, Rear
• Fits 1992-1999 Chevrolet C2500 Suburban, Rear
• Fits 1992-1999 Chevrolet K2500 Suburban, Rear
• Fits 1992-1999 Chevrolet P30, Rear
• Fits 1992-1999 GMC C2500 Suburban, Rear
• Fits 1992-1999 GMC K2500 Suburban, Rear
• Fits 1992-1999 GMC P3500, Rear
• Fits 1992-1996 Chevrolet G30, Rear
• Fits 1992-1996 GMC G3500, Rear
• Fits 1991-1993 Chevrolet C1500, Rear
• Fits 1991 Chevrolet R2500 Suburban, Rear
• Fits 1991 Chevrolet R3500, Rear
• Fits 1991 Chevrolet V3500, Rear
• Fits 1991 GMC R2500 Suburban, Rear
• Fits 1991 GMC R3500, Rear
• Fits 1991 GMC V3500, Rear