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Yukon Gear Hardcore Locking Hub Set for Dana 60 / 30 Spline
The Yukon Gear YHCHC70003 Hardcore Locking Hub Set is engineered for maximum strength and reliability on Dana 60 front axles with 30-spline outer stubs. Compatible with 1975-1993 Dodge, 1977-1991 GM, and 1978-1997 Ford trucks, the YHCHC70003 features chromoly internals, all-steel construction, and a proprietary coating on the locking gears that reduces friction for a long service life. These hubs default to the locked position and engage with just a one-third turn of the all-steel low-profile bezel. The Yukon Lifetime Warranty is included.
Key Features
- Chromoly internals — superior strength for high-torque 4WD applications and demanding off-road use
- All-steel construction — won't disengage under high torque; defaults to the locked position
- One-third turn engagement — quick transition between 2WD and 4WD using the all-steel low-profile bezel
- Low-profile design — minimizes impact exposure compared to taller OEM and competing hubs
- Proprietary locking gear coating — reduces friction and extends service life
- Dana 60 / 30-spline fitment — fits 75-93 Dodge, 77-91 GM, and 78-97 Ford Dana 60 front axles
- Yukon Lifetime Warranty — backed by Yukon Gear & Axle
What's Included
- Set of 2 Yukon YHCHC70003 Hardcore Locking Hubs (driver and passenger side)
- All mounting hardware
Specifications
| Specification | Detail |
|---|---|
| MPN | YHCHC70003 / YHC70003 |
| UPC | Not available |
| Axle | Dana 60 Front |
| Spline Count | 30 spline outer stubs |
| Material | All-steel body, chromoly internals |
| Engagement | One-third turn, defaults to locked |
| Warranty | Yukon Lifetime Warranty (Magnuson-Moss applies for drivetrain warranty claims) |
This Part Fits
| Year | Make | Model | Axle |
|---|---|---|---|
| 1975-1993 | Dodge | Truck / Ram | Dana 60 Front, 30-spline |
| 1977-1991 | GM / Chevrolet / GMC | Truck | Dana 60 Front, 30-spline |
| 1978-1997 | Ford | Truck | Dana 60 Front, 30-spline |
Frequently Asked Questions
-
Q: What is the spline count for the YHCHC70003?
A: These hubs are designed for Dana 60 front axles with 30-spline outer stubs. A separate part number is required for 35-spline applications. -
Q: Do these hubs default to locked or unlocked?
A: The YHCHC70003 defaults to the locked position under use, ensuring engagement is maintained under high-torque conditions. -
Q: How do I switch between 2WD and 4WD?
A: Simply turn the all-steel bezel one-third of a turn to engage or disengage. No tools required. -
Q: Will these fit my 1985 Chevy K30?
A: Yes, provided your K30 has a Dana 60 front axle with 30-spline outer stubs in the 1977-1991 GM fitment range. -
Q: Do these fit the 1999-2004 Ford Super Duty Dana 60?
A: No. The YHCHC70003 covers 1978-1997 Ford. Super Duty models require a 35-spline hub with a different part number. -
Q: Is there a warranty on the YHCHC70003?
A: Yes. Yukon Gear provides a Lifetime Warranty. Magnuson-Moss warranty protections apply for qualifying drivetrain applications. -
Q: Are these sold as a pair?
A: Yes. The YHCHC70003 set includes two hubs (driver and passenger side) with all hardware. -
Q: What makes chromoly internals better than standard steel?
A: Chromoly provides significantly higher tensile and yield strength than standard steel, which is critical in high-torque, shock-loaded 4WD drivetrain applications.
Installation Instructions
Remove the front wheels and existing hubs or manual locking hubs. Clean the spindle threads and axle stub. Install the Yukon YHCHC70003 hubs per the included instructions, torquing the retaining nut to the specification provided. Verify one-third turn engagement and disengagement before reinstalling the wheels. Confirm 4WD operation in a safe area before normal use.
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