Timken 231004 Engine Crankshaft Seal - Rear

Timken Rear Crankshaft Seal 231004

Timken 231004 is a rear engine crankshaft seal built for precise sealing performance in applications such as Land Rover LR3, Range Rover, Range Rover Sport, Lincoln LS, Ford Thunderbird, Jaguar XJ8, and Toyota Land Cruiser. It is engineered to help keep engine oil in place while blocking dirt and debris from entering the sealing area.

Key Features

• H-silicone sealing material for durable engine sealing performance
• Reinforced outer case helps resist installation damage
• Ribbed inner diameter helps seal minor shaft imperfections and supports positive seating
• Internal contamination exclusion system helps reduce debris intrusion at the seal lip
• Vent holes promote lubricant flow around the seal lip to help manage heat build-up
• Precision dimensions: 100.00 mm shaft diameter, 120.00 mm housing bore, 11.00 mm width

Detailed Description

This Timken crankshaft seal is designed for rear engine sealing applications where oil control and contamination resistance matter. The 231004 seal uses a reinforced construction and a ribbed inner diameter to help maintain a secure fit on the shaft, while the vented design supports lubricant circulation around the lip. With fitment across rear applications for Toyota Land Cruiser, Jaguar XJ8, Ford Thunderbird, and Land Rover LR3, it serves as a direct replacement option for vehicles that require a 100 mm shaft diameter and 120 mm housing bore. This part cross-references National 231004 for the same application.

What It Helps Address

• Rear main seal oil leakage
• Contamination entering the crankshaft sealing area
• Seal damage during installation
• Heat-related seal wear at the lip
• Improper seating on shafts with minor imperfections

Installation Notes and Tips

Confirm shaft diameter, housing bore, and seal width before installation. Clean the sealing surface thoroughly and inspect the crankshaft for wear, scoring, or contamination that could affect sealing performance. Proper alignment during installation is important to avoid damaging the outer case or sealing lip. Verify rear-position fitment for your specific vehicle before ordering. Fits 2006-2009 Land Rover LR3, rear; Fits 2003-2009 Land Rover Range Rover, rear; Fits 2006-2009 Land Rover Range Rover Sport, rear; Fits 2000-2006 Lincoln LS, rear; Fits 2002-2005 Ford Thunderbird, rear; Fits 2000-2003 Jaguar Vanden Plas, rear; Fits 2000-2003 Jaguar XJ8, rear; Fits 2000-2003 Jaguar XJR, rear; Fits 2000-2002 Jaguar S-Type, rear; Fits 2000-2002 Jaguar XK8, rear; Fits 2000-2002 Jaguar XKR, rear; Fits 1993-1997 Toyota Land Cruiser, rear; Fits 1965-1987 Toyota Land Cruiser, rear.

Quality Assurance

Timken manufactures oil and grease seals with precision sealing designs focused on lubricant retention and contamination control. Part number 231004 is built to Timken dimensional standards for rear crankshaft seal applications.