Navistar chassis (GM 4500HD)
Reference: Dana Spicer AXIP-1000-32021March 2021
Dana 60 / Dana Super 60 / Dana 61 / Dana 70 / Dana 71 Ring Gear Bolt, Pinion Washer, and Pinion Nut Set
Dana Super 60 M256 Front / Dana M275 Rear Pinion Nut M27X2.00