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This part is listed by BMW as BMW part number 11657585745 (11 65 7 585 745) and is described as the wastegate actuator for the front turbo on N54 engines. It's also known as the "pot". This pot houses a diaphragm that works using vacuum from the engine and then actuates the internal wastegate on the front turbo. A failure of the diaphragm will cause the wastegate to hold open (no boost) or closed (overboost).
Important Note #1: Although connected to the wastegate, this piece is not a cause or a fix for N54 wastegate rattle. This actuator is the opposite side of the turbo from the wastegate. The rattle is caused at the wastegate shaft and bushing on the turbine side. Replacing this pot will NOT fix any wastegate rattle issues.
Important Note #2: this diaphragm could cause 30FF low boost fault codes but it would be rare. The 30FF code is more likely caused by the wastegate shaft and flapper not sealing well against the housing. A non-working diaphragm might cause this as well but we suggest troubleshooting the diaphragm with a vacuum pump before buying a replacement. There are plenty of things that can cause 30FF codes.
This is a Genuine BMW N54 wastegate actuator 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.
Only for N54 twin-turbo models. For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.
BMW Fitments:
1 Series
E82 / E88 (08-13) > 135i
E82 / E88 (08-13) > 1M (11-12)
3 Series
E90 / E91 / E92 / E93 (06-13) > 335i
E90 / E91 / E92 / E93 (06-13) > 335is
E90 / E91 / E92 / E93 (06-13) > 335xi
5 Series
E60 / E61 (04-10) > 535i
E60 / E61 (04-10) > 535xi
Z Series
E89 Z4 (2009-2016) > Z4 sDrive35i
E89 Z4 (2009-2016) > Z4 sDrive35is
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$32.17
Wastegate Actuator (Pot), Front, BMW - E82 135i, E9X 335i, E60 535i
Vacuum-actuated wastegate controller for the front N54 turbo. Replaces BMW part #11657585745.
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