Continental Contitech Alternator Belt Compatible with BMW R Hexhead 592mm Compatible with BMW R-Series R900RT, R1200R, R1200RT, R1200GS, R1200GS ADV Years: 2005-2011 Part # 12 31 7 690 571 supercedes11 31 8 528 385 NOTE: Alternator belt change every 36,000 Miles 60 000 Kilometers NOTE: Please check your current belt for correct verification before ordering Length: 592 mm