This is the genuine BMW turbocharger for cylinders 4-6 on the S55 engine - direct-fit, no adaptation needed. Fits F80 M3, F82/F83 M4 and F87 M2 Competition models only.
It’s not a generic ‘stage 2’ bolt-on; it’s the OEM unit used by BMW, updated to latest revision. Fixes wastegate rattle, inconsistent boost and surging on stock or tuned S55s - if your car’s throwing limp mode or hesitation, this is the known fix.
Exact replacement for turbocharger on bank 2 (cylinders 4-6)
Pairs with part 11657849650 for full twin-turbo renewal
No coding, no adaptors, no guesswork - bolts straight on
