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71606850497 trailer towing modul 20-pin
Models 1' E81-E88, 3' E90-E93, 5' E60/E61, 7' E65/E66, X1 E84, X5 E70, X6 E71/E72, all models
Original part, note! 20pin contact, if your car has 16-pin modul you find correct kit in this link 71606850497S 16-20pin
