Hydraulic Haldex Pump 5th Generation BMW Mini Haldex Repair Kit 8663457 /
Repair Kit 8663457 / 33108663457DS2010677. Hydraulic Haldex Pump 5th Generation BMW Mini Haldex. The Haldex pump provides the oil pressure to operate the all-wheel-drive system assembly and engages the coupling to send power to the rear wheels.