Koyo bearings are manufactured in Japan and the USA to meet or exceed OEM standards --

Koyo Master Bearing Kit for 2010 & Down GM & Chrysler 11.5" AAM Differential
DRK327MK -- Compatible Make / Model Chevrolet / Chevy Silverado 2500 3/4 Ton (2001 - 2010) Chevrolet / Chevy Silverado 3500 1 Ton (2001 - 2010) Chevrolet / Chevy Silverado HD 2500 3/4 Ton (2001 - 2010) Chevrolet / Chevy Silverado HD 3500 1 Ton (2001 - 2010) Dodge Ram 2500 3/4 Ton (2003 - 2010) Dodge Ram 3500 1 Ton (2003 - 2010) Dodge Ram Van 2500 3/4 Ton (2003 - 2003) GMC Sierra 2500 3/4 Ton (2001 - 2010) GMC Sierra 2500 HD 3/4 Ton (2001 - 2010) GMC Sierra 3500 1 Ton (2001 - 2010) GMC Sierra 3500 HD 1 Ton (2001 - 2010) ** Fits 2010 and down GM and Chrysler 11.5" ** Uses Koyo bearings and races ** Included are carrier bearings and races, pinion bearings and races, pinion seal, pinion nut, crush sleeve, marking compound and brush.