Air Compressor Shaft bearing: 88-92 GM VariousThis is the common bearing for the AC compressor on most V8 GM US. Not all.. but most. You might want to email us your vin details and anything else relevant before getting too excited about a quick fix to a normally stuffed compressor if its making big bearing noises.. chance are its overheated, the gas is crook, the belt will snap after compress freezed and your stuffed again But the bearing is avialable if needed. Genuine GM Part.