SKF 3687 Transfer Case Shift Shaft Seal

Transfer Case Shift Shaft Seal for Ford and Mazda

SKF 3687 is a transfer case shift shaft seal built for Warner transfer case applications that need reliable sealing at the shift shaft. With a nitrile sealing surface and precise dimensions, it helps maintain lubricant control while keeping dirt and moisture out of the transfer case.

Use this seal on select Ford F-150, Explorer, Ranger, Expedition, and related Mazda truck applications where the transfer case shift shaft seal matches the listed dimensions and fitment.

Key Features

• SKF transfer case shift shaft seal, part number 3687
• Nitrile sealing surface for transfer case sealing applications
• Width: 0.250 in.
• Outside diameter: 0.753 in.
• Shaft diameter: 0.375 in.
• Built for Warner transfer case service on select Ford, Lincoln, Mercury, Cadillac, and Mazda vehicles

Detailed Description

SKF 3687 is engineered as a transfer case shift shaft seal for applications that require accurate shaft sealing and dependable fluid retention. SKF has a long history in seal design, and this seal reflects that focus with application-specific construction and premium materials selected for the operating environment. The nitrile sealing surface is suited to transfer case service where the seal must help keep lubricants in place and contaminants out.

This part cross-references Walker Products 15680A for the same application. It is listed for a wide range of vehicles, including 1996-2016 Ford F-150, 1995-2010 Ford Explorer, and 1997-2016 Ford Expedition, along with other Warner transfer case applications such as Ford Ranger, Lincoln Navigator, Mercury Mountaineer, and Mazda B-series trucks. Verify the transfer case and shaft dimensions before ordering SKF 3687.

Common Problems This Seal Can Address

• Transfer case fluid seepage at the shift shaft
• Contamination entering the transfer case through a worn seal
• Wet housing or residue around the shift shaft area
• Seal wear from age, heat, and drivetrain use
• Service replacement for Warner transfer case maintenance

Installation Notes and Tips

Confirm the transfer case style, shaft diameter, outside diameter, and seal width before installation. Clean the sealing bore and shaft surface thoroughly, and inspect for grooves, corrosion, or damage that could affect sealing performance. Proper alignment during installation helps prevent distortion of the nitrile sealing lip.

Fits 1997-2016 Ford Expedition, N/A; Fits 1996-2016 Ford F-150, N/A; Fits 1995-2011 Ford Ranger, N/A; Fits 1995-2010 Ford Explorer, N/A; Fits 2007-2010 Ford Explorer Sport Trac, N/A; Fits 2001-2005 Ford Explorer Sport Trac, N/A; Fits 1997-2010 Mercury Mountaineer, N/A; Fits 2004-2009 Cadillac SRX, N/A; Fits 1998-2008 Lincoln Navigator, N/A; Fits 1994-2008 Mazda B3000, N/A; Fits 1994-2007 Mazda B4000, N/A; Fits 2000-2005 Ford Excursion, N/A; Fits 1998-2001 Mazda B2500, N/A; Fits 1997-1999 Ford F-250, N/A; Fits 1999 Ford F-250 Super Duty, N/A; Fits 1995-1997 Ford Aerostar, N/A; Fits 1995-1996 Mazda B2300, N/A; Fits 1991-1993 Mazda B2600, N/A; Fits 1987-1990 Ford Bronco, N/A.

Quality Assurance

SKF manufactures seals to specific designs using premium materials and controlled production standards for long service life in drivetrain applications. Part number 3687 is built for transfer case sealing performance in the listed Warner transfer case vehicles.