Dorman 917-522 Transfer Case Gasket

Transfer Case Seal for Ford and Lincoln

Dorman 917-522 is a replacement transfer case gasket for vehicles with a leaking or damaged transfer case seal surface. It restores a tight seal at the transfer case to help prevent fluid loss on supported Ford and Lincoln applications, including Ford F-150, Bronco, Expedition, and E-350 Super Duty models.

• Replacement transfer case gasket for sealing the transfer case housing
• Made from N-8092 material for a reliable sealing surface
• Direct replacement for select Ford and Lincoln trucks, vans, and SUVs
• Supports transfer case leak repair on high-mileage drivetrains
• Cross-references Ford E7TZ-7086-A and E7TZ7086A

Detailed Product Information

This Dorman transfer case gasket, part number 917-522, is built to replace a warped, cracked, or deteriorated gasket at the transfer case. By restoring the seal between mating surfaces, it helps maintain proper fluid retention in the transfer case on applications such as 1980-2008 Ford F-150, 1980-1996 Ford Bronco, 1998-2006 Ford Expedition, 1998-2006 Lincoln Navigator, and 2005-2015 Ford E-350 Super Duty. It also fits additional Ford and Lincoln applications listed in the fitment data, including Ford E-150, E-250, F-250 Super Duty, F-350 Super Duty, Explorer, Mountaineer, and Mark LT.

What It Helps Fix

• Transfer case fluid leaks at the gasket surface
• Seepage caused by a warped or cracked gasket
• Loss of seal integrity after transfer case service
• Drivetrain fluid contamination from an improper seal
• Noise or drivability concerns related to low transfer case fluid

Installation Notes and Tips

Clean both mating surfaces thoroughly before installation and inspect the transfer case flange for damage, corrosion, or old seal material. Verify the application by year, make, model, and notes before ordering. This part is listed for select vehicles with no separate seal required.

Quality Assurance

Dorman replacement parts are engineered for direct-fit service on the listed applications. Part number 917-522 is a transfer case gasket replacement for Ford and Lincoln drivetrains where the original gasket no longer seals properly.