This part is listed by BMW as BMW part number 64111373799 (64 11 1 373 799) and is described as a plastic inlet pipe for the heater core on some E30 models. BMW used either plastic or aluminum tube for the heater core and they are not interchangeable. It's recommended that you check your car before ordering.
This is a Genuine BMW heater core pipe 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.
For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.