BMW released an update kit to replace the mechanical tensioner for the water pump with a hydraulic style tensioner.
The kit comes with all necessary parts to complete this update. Comes with the following items.Part# 11 28 7 838 797
- (1) Tensioner Assembly / Swing Arm
- (1) Adjusting Pulley
- (2) Protection Caps
- (3) Bolts (3) Washes
- (1) Dust Guard
- (1) Screw
533 0097 100
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