Material: ALLOY STEEL CRANKSHAFT. BMW MODELS 03:: 7 (F01, F02, F03, F04), 4 GRAN COUPE (F36), 6 CONVERTIBLE (F12). BMW MODELS 2:: 5 TOURING (F11), X6 (E71, E72), 4 CONVERTIBLE (F33, F83). BMW MODELS 1:: X6 (F16, F86), 4 CONVERTIBLE (F33, F83), X4 (F26), 3 (F30, F80).