Only for cars produced before 6/1987The Original BMW rubber intake boot connects the air flow sensor with the throttle body on the E28 535i, E24 635csi, E23 735i. It's after the air filter and mass air meter so any rips or tears on the boot material will allow unfiltered and unmetered air into the engine. And since vacuum and air pressure within the engine are closely managed, any air leak can be a serious problem. Air leaks from a cracked intake boot can cause your E28, E24, or E23 to run rough, poor idle, throttle surging, stumbling, hesitations, and misfires. These can be caused by other things but a leak in the intake boot is easy to check and inexepensive to fix!
This part is listed by BMW as BMW part number 13541707080 (13-54-1-707-080) and is described as Genuine BMW Intake Bellows for E23/E24/E28.
For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.
BMW Fitments:
5 Series
E28 (82-88) > 535i
6 Series
E24 (77-89) > 635CSi
7 Series
E23 (77-87) > 735i