This part is listed by BMW as BMW part number 21532282255 (21 53 2 282 255) and is described as the plastic fluid hose that brings SMG hydraulic fluid from the tank to the pump on E46 M3. This hose connects the tank and the pump and can be the source of SMG fluid leaks. A new connector and oring are included for the TOP but not the bottom. For some reason, BMW does not sell the lower o-ring and lock ring separately.
Use a lot of care removing the lower lock ring from the pump! The plastic retaining clip is fragile from age and there is no OEM replacement.
This is a Genuine BMW SMG 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.
For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.
BMW Fitments:
3 Series
E46 (99-05) > M3