Overview
The Dana Spicer D/S30271 is a self-locking pinion nut for the rear differential of a Dana 60 axle. It has a .875-14 thread, a hex of 32.815mm and a thickness of 15.875mm.
It fits Chevrolet, GMC, Ford, Dodge, Jeep and Nissan trucks, vans and SUVs from 1992 to 2015, depending on model.
Key features
- Self-locking design for the pinion gear
- Thread size .875-14
- Hex 32.815mm and flange diameter 32.515mm
- Thickness 15.875mm
- Made in the USA.
Preload and setup considerations
A pinion nut holds the pinion gear and its bearings under set preload, and that preload keeps the gear mesh stable under load. Because the nut is tightened against a bearing preload, it should be treated as a setup part, not a quick swap. Experienced technicians usually check the bearing turning torque and gear mesh after the nut is installed.
Self-locking nuts are designed to resist loosening, but the threads still need clean, dry surfaces and good thread condition before installation. Check the pinion yoke or flange for burrs or wear, since any damage can change the clamp. Inspect the rear differential for leaks and listen for noise on the first drive after service.
- Clean threads and flange surface
- Bearing preload checked after installation
- Gear mesh and noise check on test drive
Specifications
| Brand | Dana Spicer |
|---|---|
| Part number | D/S30271 |
| Position | Rear differential |
| Axle | Dana 60 |
| Design | Self locking |
| Thread size | .875-14 |
| Hex | 32.815mm |
| Thickness | 15.875mm |
| Flange diameter | 32.515mm |
| Made in USA | Yes |
Vehicle fitment
It fits these vehicles by year range:
- Chevrolet C3500 1992–1998, K3500 1992–2000, Express 2500 2003–2009, Express 3500 1996–2001
- Dodge B-, D- and W-series 1992–1998, Ram 1500 2004–2006, Ram 2500 and 3500 1994–2003
- Ford E-250 1992–2014, E-350 1992–2005, E-350 Super Duty 2003–2014, F-250 Super Duty 2002–2015, F-350 1992–1997, F-350 Super Duty 1999–2015
- GMC C3500 1992–1998, K3500 1993–2000, Savana 2500 2003–2013, Savana 3500 1996–2001
- Jeep Commander 2006–2008, Grand Cherokee WJ 1999–2004, WK 2005–2008, ZJ 1996–1998, and Wrangler JK 2007–2018
- Nissan Armada 2005–2008, Frontier 2004–2014, Pathfinder 2003–2007, Titan 2004–2015, Xterra 2005–2015
Jeep Wrangler TJ, LJ and JL models and the Gladiator are not in this list. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Pinion nut preload is set during gear and pinion setup, so an experienced axle technician should handle the installation.
What’s included
The nut is sold on its own. Check the package contents against your installation before starting.
