Timken 4143 Transfer Case Output Shaft Seal - Front or Rear

Timken 4143 Transfer Case Output Shaft Seal

The Timken 4143 transfer case output shaft seal is built for Ford and Mazda applications that use Warner transfer case designs. It helps retain lubricant at the output shaft while keeping dirt and debris out of the transfer case housing.

Key Features

• Precision sealing design for lubricant retention and contaminant exclusion
• Reinforced outer case to resist installation damage and improve durability
• Ribbed rubber inner diameter for sealing minor spindle imperfections and stable seating
• Internal contamination exclusion system to reduce debris intrusion and leakage risk
• Vent holes that promote lubricant flow around the seal lip and help manage heat

Detailed Description

Timken Part Number 4143 is a transfer case output shaft seal engineered for select Ford Explorer, Ford Ranger, Ford Aerostar, Ford Bronco II, Ford Mustang, Mazda B2600, and Mazda Navajo applications. It is used in Warner 1350, 1354, 1359, and 4405 transfer case configurations, including selector shaft seal applications noted in the fitment data. This seal is designed to maintain a clean sealing surface, support proper shaft seating, and reduce the chance of fluid loss from the transfer case.

This part cross-references AMS Automotive 4143 and Bosch 16043 for the same application.

Common Problems This Seal Can Address

• Transfer case fluid leaking from the output shaft area
• Contamination entering the transfer case through a worn seal
• Seal damage caused by installation on a worn or imperfect shaft surface
• Heat-related seal wear from poor lubricant circulation at the lip
• Loose or uneven seal seating in the transfer case bore

Installation Notes and Tips

• Clean the shaft, bore, and surrounding housing before installation.
• Inspect the shaft for grooves, corrosion, or wear that could affect sealing.
• Install the seal squarely to avoid distortion of the outer case or sealing lip.
• Verify the transfer case model and position against the vehicle application before service.

Quality Assurance

Timken oil and grease seals are built with reinforced construction and contamination-control features to support reliable sealing performance in drivetrain service.

• Fits 1993-2008 Ford Explorer, N/A, Warner 4405
• Fits 1991-2008 Ford Explorer, N/A, Transfer case selector shaft seal for Warner 1354 model.
• Fits 2007-2008 Ford Explorer Sport Trac, N/A, Warner 4405
• Fits 2001-2005 Ford Explorer Sport Trac, N/A, Warner 4405
• Fits 2007-2008 Ford Explorer Sport Trac, N/A, Transfer case selector shaft seal for Warner 1354 model.
• Fits 2001-2005 Ford Explorer Sport Trac, N/A, Transfer case selector shaft seal for Warner 1354 model.
• Fits 1993-2008 Ford Ranger, N/A, Warner 4405
• Fits 1990-2008 Ford Ranger, N/A, Transfer case selector shaft seal for Warner 1354 model.
• Fits 1993-1997 Ford Aerostar, N/A, Warner 4405
• Fits 1990-1997 Ford Aerostar, N/A, Transfer case selector shaft seal for Warner 1354 model.
• Fits 1987-1993 Ford Mustang, N/A
• Fits 1990-1992 Ford Aerostar, Front, Transfer case selector shaft seal for Warner 1354 model.
• Fits 1990-1992 Ford Aerostar, Rear, Warner 1350, 1354
• Fits 1991-1992 Ford Explorer, Front, Transfer case selector shaft seal for Warner 1354 model.
• Fits 1991-1992 Ford Explorer, Rear, Warner 1350, 1354
• Fits 1990-1992 Ford Ranger, Front, Transfer case selector shaft seal for Warner 1354 model.
• Fits 1983-1992 Ford Ranger, Rear, Warner 1350, 1354
• Fits 1991-1992 Mazda B2600, N/A, Transfer case selector shaft seal for Warner 1354 model.
• Fits 1991-1992 Mazda B2600, Front, Transfer case selector shaft seal for Warner 1354 model.
• Fits 1991-1992 Mazda B2600, Rear, Transfer case selector shaft seal for Warner 1354 model.
• Fits 1991-1992 Mazda Navajo, N/A, Transfer case selector shaft seal for Warner 1354 model.
• Fits 1991-1992 Mazda Navajo, Front, Transfer case selector shaft seal for Warner 1354 model.
• Fits 1991-1992 Mazda Navajo, Rear, Transfer case selector shaft seal for Warner 1354 model.
• Fits 1990 Ford Aerostar, Rear, Warner 1359
• Fits 1990 Ford Bronco II, N/A, Transfer case selector shaft seal for Warner 1354 model.
• Fits 1990 Ford Bronco II, Front, Transfer case selector shaft seal for Warner 1354 model.
• Fits 1984-1990 Ford Bronco II, Rear, Warner 1350, 1354
• Fits 1987-1990 Ford Bronco II, Rear, Warner 1359
• Fits 1987-1990 Ford Ranger, Rear, Warner 1359