Timken 39805 Engine Crankshaft Seal - Rear

Timken Rear Engine Crankshaft Seal

Timken 39805 is a rear engine crankshaft seal built to retain oil and grease while keeping dirt and debris out of the sealing area. It is a direct-fit service part for select Dodge D250 and Dodge W250 applications from 1989-1993.

• Precision sealing design helps control lubricant loss
• Reinforced outer case resists installation damage and adds durability
• Ribbed rubber inner diameter helps seal minor spindle imperfections and supports positive seating
• Internal contamination exclusion system helps block debris that can lead to leakage
• Vent holes promote lubricant flow around the seal lip to reduce heat build-up

Detailed Application Overview

Compatible With 1989-1993 Dodge D250, rear and 1989-1993 Dodge W250, rear, Timken 39805 is engineered for rear crankshaft sealing service where dependable lubricant retention matters. This part cross-references National 39805 and MOOG Driveline Products 285 for the same application. Use this Timken crankshaft seal when servicing a rear seal leak on a Dodge D250 or Dodge W250 and you need a replacement that matches the listed fitment.

What It Helps Address

• Rear engine oil seepage at the crankshaft seal area
• Grease or lubricant escape from the sealing surface
• Contamination entering the seal lip area
• Leakage caused by minor spindle surface imperfections
• Heat-related seal wear from poor lubricant circulation

Installation Notes and Tips

Inspect the sealing surface before installation and clean the housing thoroughly. Confirm rear-position fitment for your Dodge D250 or Dodge W250 before assembly, and verify the seal seats evenly to avoid damage during installation. Timken 39805 should be installed on the correct rear application only.

Quality Assurance

Timken uses precision sealing designs, a reinforced outer case, and contamination-exclusion features to support consistent sealing performance in service.