ZBAG NV27134M GM NV4500 Transmission Up Dated 5th Gear Nut Kit Fits All GM NV 4500 Transmissions Fits Dodge 5.2L Gas and 5.9L Gas Transmissions Updated Lock nut with 2 set screws Includes 2 brass pucks to save threads on mainshaft when set screws are tightened Prevents 5th gear from coming loose