Screw Plug, crankcase Screw Plug, crankcase sealing the crankcase housing, cover or related engine passage SINATEC "AP-51B" - Not availableBMW - 5, 3 (F30, F80), 4 (F32, F33, F82), 1, Z4 Roadster, 2, X1, X3, X4, X5