Hydraulic Belt Tensioner for AC Belt - E9X M3, E60 M5, & E63 M6

This part is listed by BMW as BMW part number 11287835422 (11 28 7 835 422) and is described as Hydraulic Belt Tensioner for Air Conditiioning Belt on the E9X M3 S65 V8 (which includes E90 M3 sedan, E92 M3 coupe, and E93 M3 convertible) as well as the E60 M5 sedan (V10), and E63 M6 coupe/convertible.

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