Dorman 600-203 Locking Hub

Dorman 600-203 Locking Hub for Ford 4WD

Restore proper four-wheel drive operation with this Dorman locking hub, a direct replacement for the original equipment hub on specific Ford and Lincoln applications. Built with steel and plastic construction, it addresses hub-related 4WD engagement problems on vehicles equipped with the auto-lock hub design.

• Direct replacement locking hub for 4WD systems
• Steel/plastic construction for OE-style fit and function
• Designed for vehicles with the 1C34 prefix tag and standard design
• Supports auto hub lock applications
• Part number: 600-203

Detailed Product Overview

The Dorman 600-203 locking hub is made to replace the original hub on select Ford Excursion, Ford F-250 Super Duty, Ford F-350 Super Duty, Ford Expedition, and Lincoln Navigator models. It is a practical solution when the factory hub no longer engages or disengages correctly, helping restore front axle lockup in 4WD systems. This part cross-references Ford OE 1C3Z3B396CB for the same application.

Compatible With 2000-2005 Ford Excursion, standard design; 1C34 prefix tag only; auto hub lock. Compatible With 1999-2004 Ford F-250 Super Duty, standard design; 1C34 prefix tag only; auto hub lock. Compatible With 1999-2004 Ford F-350 Super Duty, standard design; 1C34 prefix tag only; auto hub lock. Compatible With 2001-2002 Ford Expedition, standard design; 1C34 prefix tag only; auto hub lock. Compatible With 2001-2002 Lincoln Navigator, standard design; 1C34 prefix tag only; auto hub lock.

Common Problems This Part Can Address

• 4WD not engaging at the front wheels
• Hub stuck in the locked or unlocked position
• Intermittent front axle engagement
• Noise or drivability issues related to a worn hub assembly
• Loss of automatic hub function on equipped vehicles

Installation Notes and Tips

Verify the axle tag prefix and hub design before ordering, since this part is specified for standard design vehicles with a 1C34 prefix tag. Confirm the vehicle’s year, make, model, and auto hub lock configuration against the fitment list before installation. The part number 600-203 is intended as a direct replacement for the listed applications.

Quality Assurance

Dorman is known for replacement parts engineered to match OE-style fit and function on specific vehicle applications. This locking hub follows that approach with application-specific construction and fitment for select Ford and Lincoln 4WD models.