Also call pinion cruch sleeve, limits pinion brearing pre-load. Needs to be their or may damage bearings by being too tight. If don't have a new one you can add a shim or 2 and give the old one some room to 'crush'.


BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022