Don’t risk your axle to low quality parts!  These are the master install kits we use on our builds.  Timken bearings and parts that work!   Master Differential Bearing and Seal Kit   Fits Chevy/GMC 3/4 ton, 1 ton TRUCK and VAN With 10.5 inch 14 bolt full floater rear end 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984**, 1985**, 1986, 1987 Also fits 1988 with 1st design 10.5 inch rear end DOES NOT FIT….. 1988 with 2nd design 10.5 inch rear end NOTE: ** For 1984 – 1985 you must use pinion nose bearing DC57524 – NOT packaged in this kit Ring Gear BOLTS in this kit will fit up to 4.10 ratio.  If using 4.56 and higher ratio gears you will need RGB10 ring gear bolts Parts included in kit: (2) Differential Bearing(1) Pinion Head Bearing(1) Pinion Tail Bearing (1) Pinion Nose Bearing (1) Pinion Seal(1) Crush Sleeve(1) Pinion Nut(1) Gear Marking & Brush(1) Threadlocker(1) Sealer RTV Silicone(1) Pinion Depth Shims(12) Ring Gear Bolts