Heater Return Pipe, Genuine BMW - E9X 325xi/328xi/330xi Manual
Returns coolant to the expansion tank from the heater core. Genuine BMW replacement for part #17127527131
This part is listed by BMW as BMW part number 17127525870 (17 12 7 525 870) and is described as Genuine BMW Heater Return Line for 2006-2012 E90/E91/E92 325xi, 328xi, and 330xi with xDrive and manual transmission. This large, intricate pipe returns coolant from the heater core on the firewall to the thermostat and expansion tank. There are a lot of connections on this pipe which can lead to leaks. The pipe itself is prone to corrosion. Take care of leaks as quickly as possible before they turn into more expensive repairs!
Only for cars with AWD xDrive and manual transmission.
This hose is found on the following BMWs:
2006 325xi sedan
2006 325xiT wagon
2006 330xi sedan
2007-2011 328xi sedan
2007-2012 328xiT wagon
2007-2012 328xi coupe (328i xDrive coupe)
For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.
E90 / E91 / E92 / E93 (06-13) > 325xi
E90 / E91 / E92 / E93 (06-13) > 328xi
E90 / E91 / E92 / E93 (06-13) > 330xi