HomeDriveline and Axles > Axle ShaftDorman 600-203XD Locking Hub
Part #: 600-203XD

Dorman 600-203XD Locking Hub

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⚙️ 22 vehicles fit this part
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Select your vehicle to confirm fitment
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✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford and Lincoln, Excursion, F-250 Super Duty, F-350 Super Duty, Expedition, and Navigator
🔄Easy Returns — Return within 60 days for a full refund
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Overview of Dorman 600-203XD Locking Hub for Ford and Lincoln

The Dorman 600-203XD locking hub is designed for select Ford and Lincoln trucks and SUVs, including the Excursion, Expedition, F-250 Super Duty, F-350 Super Duty, and Navigator. This locking hub provides reliable engagement and disengagement of the front axle, helping maintain driveline efficiency and vehicle performance.

  • Compatible with Ford Excursion, Expedition, F-250 Super Duty, F-350 Super Duty, and Lincoln Navigator
  • Part number 600-203XD ensures precise fitment
  • Constructed from durable metal with a plastic dial for ease of use
  • Features dual spline quantities: 30 and 55 splines for secure axle connection
  • Includes one locking hub and one retaining ring in the package
  • Axle shaft diameter of 30.74 mm for proper fit

Detailed Product Features and Specifications

The Dorman 600-203XD locking hub is engineered with a metal body for strength and durability, paired with a plastic dial that allows for smooth operation when engaging or disengaging the hub. It supports two spline quantities, 30 and 55, which correspond to the axle shaft interface, ensuring a secure and precise connection. The axle shaft diameter measures 30.74 mm, matching the specifications required for the compatible Ford and Lincoln models. This locking hub does not require mounting bolts, simplifying installation and maintenance. The package includes one locking hub and a retaining ring to secure the assembly.

Applications and Common Issues Addressed

  • Restores proper front axle engagement on Ford Excursion and Expedition models
  • Replaces worn or damaged locking hubs on F-250 and F-350 Super Duty trucks
  • Solves issues related to front wheel drive disengagement or axle noise
  • Addresses problems with hub locking failure that can affect four-wheel drive operation
  • Improves driveline efficiency by ensuring correct hub locking and unlocking

Installation Notes and Tips

Installation of the Dorman 600-203XD locking hub requires removal of the existing hub assembly. Ensure the axle shaft diameter and spline count match the vehicle specifications before installation. The included retaining ring must be properly seated to secure the hub in place. No mounting bolts are necessary, which can reduce installation time. It is recommended to inspect the axle shaft and surrounding components for wear or damage during installation to ensure optimal performance.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance for your vehicle. The 600-203XD locking hub is made from quality metal materials with a durable plastic dial to withstand regular use. While specific warranty details may vary, Dorman typically offers limited warranties on their parts to cover defects in material and workmanship. Consult product documentation or the manufacturer for exact warranty terms.

BrandDorman
Part Number600-203XD
Axle Shaft Diameter30.74
Dial MaterialPlastic
MaterialMetal
Mounting Bolt Quantity0
Package Contents1 Locking Hub; 1 Retaining Ring
Spline Quantity30
Spline Quantity55

This part fits 22 vehicles. Search below:

YearMakeModelDrive TypePositionNotes
2005FordExcursion4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2004FordExcursion4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2004FordF-250 Super Duty4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2004FordF-350 Super Duty4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2003FordExcursion4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2003FordF-250 Super Duty4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2003FordF-350 Super Duty4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2002FordExcursion4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2002FordExpedition4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2002FordF-250 Super Duty4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2002FordF-350 Super Duty4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2002LincolnNavigator4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2001FordExcursion4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2001FordExpedition4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2001FordF-250 Super Duty4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2001FordF-350 Super Duty4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2001LincolnNavigator4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2000FordExcursion4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2000FordF-250 Super Duty4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
2000FordF-350 Super Duty4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
1999FordF-250 Super Duty4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.
1999FordF-350 Super Duty4WDN/AImproved design; compatible with vehicles that have a 1C34 prefix tag and feature auto hub lock functionality.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1C3Z3B396CB

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.