Electric water pump in heater circuit aka: Auxiliary Water Pump
Detailed Description
Sprinter 2002-2006
This is the original factory Bosch pump. This is the identical, German made, Bosch pump as sold at a franchise Dodge, Mercedes Benz or Freightliner dealer for 89% below the Dodge retail price.
It is NOT one of the cheap Chinese knock-offs which are often found on eBay.