Haturbo Turbo Wastegate Actuator — N20/N26 F30 F10 F25 E84

Fitment on this actuator is specific and deliberate. It is designed for BMW models equipped with the pre-revision Mitsubishi TD04 turbocharger — covering 2012–2013 F30 328i sedans and wagons built before November 2012, 2012–2014 F10 528i, 2013 F25 X3 xDrive28i built before April 2013, and the 2012 E89 Z4 sDrive28i. It cross-references directly against OEM BMW part numbers 11657588938 and 11657635804, as well as more than twenty Mitsubishi turbo cartridge codes in the 49477 family, giving you multiple ways to confirm the right fit before the part ships.

Installation is a straightforward bolt-on swap with no modifications, adapters, or special tooling required. Whether you are tackling this in your own driveway or bringing it to a shop, the direct-fit design keeps labor time to a minimum. There is no need for recalibration or coding after installation — once it is in, the engine management system recognizes proper actuator behavior immediately.

For N20 and N26 owners dealing with sluggish boost buildup, recurring P-codes, or a turbo that simply does not feel as sharp as it once did, this is one of the highest-value repairs you can make. Replacing the actuator before the issue cascades into broader turbocharger damage is the kind of proactive maintenance that keeps these engines performing the way BMW intended.