Coolant Hose (Heater Inlet 2), BMW - E28 M5 & E24 633CSi 635CSI M6

This part is listed by BMW as BMW part number 64211374637 (64-21-1-374-637) and is described as Genuine BMW Coolant Hose (Heater Inlet 2) for E28 M5 (1988), E24 633CSi, 635CSi, M6 (1985-1989).

This is a Genuine BMW coolant hose with a two year warranty. Buying a Genuine part will usually be more expensive than an OEM or aftermarket brand but you are assured that it meets BMW's designs for fitment, performance, and longevity. It will also be the very latest design, incorporating any updates or revisions that an aftermarket brand typically will ignore.