Yukon Dana 80 Bearing Install Kit - 4.125" OD Bearing
YUKBK D80-A
The Yukon Dana 80 Bearing Install Kit – 4.125" OD Inner Pinion Bearing Race is designed for professional differential builders and experienced enthusiasts performing ring and pinion installations or bearing service on Dana 80 rear differentials. Rather than supplying every overhaul component, this install kit focuses on the premium bearings, races, seals, and essential installation materials required during gear setup while allowing builders to utilize their preferred shim kits.
Featuring genuine Timken bearings and races, this kit provides the components needed to establish proper carrier support, pinion bearing preload, and long-term gear reliability. It is an excellent choice for towing vehicles, heavy-duty work trucks, off-road rigs, and custom axle builds utilizing Dana 80 rear axle assemblies with a 4.125-inch outer diameter inner pinion bearing race.
Includes:
- Carrier Bearings and Races
- Pinion Bearings and Races
- Pinion Seal
- Gear Marking Compound with Brush
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Yukon Gear & Axle |
| Product Type | Bearing Install Kit |
| Differential | Dana Spicer 80 Rear Axle |
| Inner Pinion Bearing Race | 4.125" Outside Diameter |
| Bearings | Premium Timken Bearings and Races |
| Inner Pinion Bearing Set | HM807046 / HM807010 |
| Spline Compatibility | 35 Spline and 37 Spline Applications |
| Axle Position | Rear Only |
| Application | Ring and Pinion Installation & Bearing Service |
| Shim Kit Included | No |
Fitment
| Make | Model | Year Range |
|---|---|---|
| Chevrolet | C3500, C3500HD, C4500 Kodiak, Express 3500, G30, K3500, P30 | 1990–2009* |
| Dodge | B3500, Ram 2500, Ram 2500 Van, Ram 3500 | 1994–2003* |
| Ford | E-350 Econoline, F-350, F-Super Duty | 1988–1998* |
| GMC | C3500, C3500HD, K3500, P3500 | 1992–2002* |
Fitment Notes
- Fits Dana 80 rear differential applications only.
- Designed specifically for housings utilizing a 4.125" outside diameter inner pinion bearing race.
- Compatible with both 35-spline and 37-spline Dana 80 axle configurations where applicable.
- Verify axle model, spline count, and pinion bearing dimensions before ordering.
- *Vehicle applications should always be confirmed by axle model and bearing dimensions, as Dana 80 specifications can vary by production year and application.
FAQ
1. Why replace bearings during a ring and pinion installation?
New bearings provide a stable foundation for accurate pinion preload and carrier bearing preload. Reusing worn bearings can alter gear mesh, increase operating temperatures, and shorten the life of the new ring and pinion.
2. Why does the Dana 80 require the correct inner pinion bearing size?
Dana 80 axles were produced with multiple bearing configurations. Verifying the required 4.125-inch outer diameter inner pinion bearing race ensures the bearings properly fit the housing and support the pinion under heavy loads.
3. Why are Timken bearings preferred for differential builds?
Timken tapered roller bearings are manufactured to tight tolerances that help maintain proper gear alignment under towing, commercial hauling, and high-torque off-road conditions while providing long service life.
4. Why doesn't this install kit include setup shims?
Many professional builders maintain their own shim inventories or reuse setup bearings during gear installation. This kit focuses on the premium bearings, races, seal, and installation materials most commonly replaced during differential service.
5. What should be verified before final differential assembly?
Always confirm pinion bearing preload, carrier bearing preload, backlash, gear tooth contact pattern, and bearing fitment before final assembly. Proper differential setup is essential for quiet operation, maximum gear life, and reliable performance.