Timken 5723 Engine Crankshaft Seal - Rear

Timken 5723 Rear Engine Crankshaft Seal

Timken 5723 is a rear engine crankshaft seal built for Ford truck and van applications that need reliable oil control at the crankshaft. It is engineered to help keep lubricant in place while limiting the entry of dirt and other contaminants.

Key Features

• Precision sealing design helps reduce oil and grease escape at the crankshaft
• Reinforced outer case helps resist installation damage and adds durability
• Ribbed rubber inner diameter helps seal minor spindle imperfections and promote 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 build-up

Detailed Description

This Timken crankshaft seal is a direct-fit sealing component for rear engine applications on Ford E-350 Club Wagon, E-350 Super Duty, Excursion, F-250 Super Duty, F-350 Super Duty, E-350 Econoline Club Wagon, E-350 Econoline, F-350, and F-250 models across the 1994-2003 range. Timken 5723 is designed to maintain a tight seal at the crankshaft while supporting cleaner operation in demanding engine environments.

This part cross-references National Oil Seals 5723 for the same application.

What It Helps Address

• Rear main oil seepage at the crankshaft seal area
• Contamination entering the seal interface
• Heat-related seal wear from lubricant build-up
• Leakage caused by minor shaft surface imperfections
• Seal damage during installation

Installation Notes and Tips

Verify rear crankshaft seal application by year, make, model, and position before installation. Inspect the sealing surface for wear, scoring, or contamination, and clean the area thoroughly before fitting the seal. Proper alignment during installation is important to avoid lip damage and to help the seal seat evenly.

Quality Assurance

Timken manufactures sealing components with precision-focused designs and durability features intended for engine service environments. This part is built to support consistent sealing performance in compatible Ford rear crankshaft applications.