Pierburg 702671450 Auxiliary Water Pump Assembly

The Pierburg 7.02671.45.0 is a 12V electric auxiliary water circulation pump designed for engine cooling support and parking heater systems. It serves as a direct OEM replacement for BMW part number 64129329961 and Webasto part number 1320360A. The pump features a compact brushless motor design for extended service life and quiet operation. It is engineered to maintain coolant flow during engine start-stop cycles, turbocharger after-run cooling, and independent cabin heating via Webasto Thermo Top E and C heaters. The housing is constructed from high-temperature resistant reinforced polymer with precision-machined impeller for consistent flow rates at 12V nominal voltage.