If you're diving into a differential rebuild, USA Standard's Master Overhaul Kit is your go-to. Seriously, this kit has everything you need to get the job done right, and it's built to last. It’s designed specifically for the Dana Spicer 80 with a 4.125 inch O.D. pinion bearing, so you know it’s gonna fit like a glove.

• First off, the kit comes loaded with Koyo bearings and races—these guys are known for their durability. You won't be replacing these anytime soon.
• What’s in the box? You’ve got carrier bearings and races, pinion bearings and races, and even a pinion seal. Plus, a complete shim kit to help you dial in that perfect setup.
• And don’t worry about the little things; it includes ring gear bolts, a pinion nut, oil baffles and slingers, thread locker, marking compound with a brush, and silicone. Basically, it’s everything you need to wrap up your install without running to the store for missing parts.

One year warranty against manufacturer defects gives you peace of mind, too. You can tackle that job with confidence, knowing you’re covered if something goes sideways.

This kit fits a range of vehicles, including:

• Chevrolet C/K 3500 (1990-2001)
• Chevrolet Express (1996-2007)
• Chevrolet G30 (1992-1995)
• Chevrolet P30 (1997-1999)
• Dodge B3500 (1995-1998)
• Dodge Ram 2500 (1994-2003)
• Dodge Ram 3500 (1994-2002)
• Ford E-350 (1988-1998)
• Ford F-350 (1988-1997)
• GMC C/K 3500 (1992-2002)

So, if you’re looking to rebuild your Dana 80 differential, this overhaul kit has got your back. It’s reliable, complete, and made for folks who want to get their hands dirty and do it right.