A complete rebuild kit contains the following: Output Shaft, Cluster Shaft, Input Shaft Bearings and Races, Synchronizer Rings (Blocking Rings), Synchronizer Keys and Springs for each of the 3 Synchronizer Assemblies, Front and Rear Seal, Small Parts Kit (Snap Rings, Shims, Thrust Washer and Bearing), Rear Extension Housing Bushing, Shift Fork Pads, and Rear Offset Lever Shifter Cup.