GMC 2500 HD Duramax Spindle
This replacement spindle is built for GMC Sierra 2500 HD trucks equipped with the AAM 11.5″ full-floating rear axle. These rear-axle systems, standard since the launch of the Duramax diesel platform in 2001, are trusted for their strength, serviceability, and long-haul durability in high-mileage fleet and towing applications.
This GMC 2500 HD Duramax replacement spindle supports proper bearing alignment and smooth wheel-end operation under load, making it ideal for fleet rebuilds, hub replacements, or preventative maintenance.
Sold as a spindle-only unit unless otherwise noted, it’s built to handle the same demanding workloads that GMC’s HD trucks are known for.
WATCH: Step-by-Step Pickup Truck Spindle Removal/Installation
| Type: | Pickup Truck |
| Recommended Fit For: | Heavy-Duty Pickup |
| Weight: | 6 lbs |
| Warranty: | 1 year limited warranty |
| Compatible Parts: | Inner Bearing: 387A / GM 15042155 / RW20-08 / NP910345, Outer Bearing: LM104949 / GM 15042154 / RW20-07 / NP145100, Seal: SL260002 / 710568 / 15823962 |
| Dimensions: | Inner Bearing: 57.15mm, Outer Bearing: 50.8mm, Seal: 72.31mm |




