Compatibility: The Differential Type 188 Bearings Repair Kit fits in E23, E28, E30, E32, E34, E24, E36, E36/5, Z1, Z3 cases. Can be used with both LSD and Open differentials. Rebuild Diff: Differential Type 188 Bearings Repair Kit helps you complete 188 diff rebuilds and repairs. Directly replace damaged and worn bearings. What You Get: Tapered Roller Bearing (with Cone and Cup) X 4; Pinion Oil Seal X 1; Carrier Oil Seals with Lock Rings X 2; O-Rings X 2; Crush Sleeve X 1; Securing Plate X 1. Superior Quality: .