The original engine water pump on certain vehicles fails from high coolant temperatures damaging electronics. This Dorman OE FIX replacement features a redesigned electronic board with an upgraded microcontroller to prevent future failures. Product Features:Upgraded replacement - this electronic engine water pump features a redesigned electronic board and microcontroller to increase durabilityFailure-resistant design - made to prevent internal electronic damage that is common in factory equipmentThoroughly remanufactured - includes all new bearings, O-rings, seals and mounting hardwareApplication specific - made to match fit and function of original water pump on certain BMW models