1970-2003 GM 8.5 in Differential Carrier (YC G26010481)Manufactures a full line of standard open and positraction limited slip carrier cases for a variety of applications. Each unit is cast and machined to exacting specifications to produce a carrier that provides both high strength and tight tolerances for a long and reliable service life. This case is loaded with spider and side gears. Features Differential Case Yukon standard open carrier case, GM 8. 5", 2. 73 & up 8. 5" GM STD CASE, 2. 73 & UP, 28spl