Genuine BMW S55 Front Turbocharger (Cylinders 1-3) for F80 M3, F82/F83 M4, F87 M2 Competition - OEM Part 11657849650

OE BMW S55 Bank 1 Turbo Unit, Front Bank Cylinders 1 to 3, fits F80 M3, F82 F83 M4, F87 M2 Competition, Part No. 11657849650

Get your F8x back on song. This original equipment front bank turbocharger for the S55 straight six restores strong boost, crisp response and smooth factory drivability. It is the like for like replacement for the front turbo serving cylinders 1 to 3 on the BMW M2 Competition F87, M3 F80 and M4 F82 F83. If you are experiencing actuator noise, underboost, hesitation, reduced power or limp mode, this OE unit is the proven fix that brings stock performance and reliability back.

Enthusiasts choose this front bank turbo for a dependable, factory correct solution. We have fitted this part on customer cars and the feedback has been consistently positive, with solid boost control, quiet operation and that OEM feel you expect from a healthy S55.

Part number: 11657849650

Key reasons to choose this OE turbo assembly

• Correct front bank turbo for S55 engines, bank 1 cylinders 1 to 3
• Direct replacement unit, maintains factory calibration and drivability
• Addresses common S55 issues such as wastegate rattle, underboost and limp home
• Built to BMW original equipment specification for long term reliability
• Ideal for F80 M3, F82 F83 M4 and F87 M2 Competition owners wanting a dependable fix

Important note: the S55 uses two turbochargers. This listing is for the front bank unit that serves cylinders 1 to 3. To renew both banks, you will also need the matching rear bank turbo for cylinders 4 to 6.

Typical faults this front bank S55 turbo resolves

• Wastegate actuator rattle from the front bank
• Reduced boost pressure or boost not meeting target
• Hesitation, flat spots and lack of punch
• Limp mode triggered by underboost related fault codes

Fitting and installation

We recommend professional installation. For expert fitting, book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

You will typically require the following additional parts for installation:

• BMW S55 F80 F82 F87 turbo installation hardware kit
• BMW S55 coolant feed and return line kit
• BMW S55 service items for M2 Competition, M3 and M4
• 2 x Castrol Edge 5W-30 M fully synthetic engine oil
• 4 x Genuine BMW antifreeze and coolant 1.5 litre
• 8 x De-ionised water 1 litre

Compatibility

• BMW F80 M3 Saloon S55 2012 to 2015
• BMW F80 LCI M3 Saloon S55 2015 to 2018
• BMW F82 M4 Coupe S55 2013 to 2017
• BMW F82 M4 GTS Coupe S55 2013 to 2017
• BMW F82 LCI M4 Coupe S55 2016 to 2019
• BMW F82 LCI M4 CS Coupe S55 2016 to 2019
• BMW F83 M4 Convertible S55 2013 to 2017
• BMW F83 LCI M4 Convertible S55 2016 to 2019
• BMW F87 LCI M2 Competition S55 2018 onward

Fitment check before dispatch

We confirm compatibility prior to shipping. Add your UK registration number or the last 7 of your VIN at checkout so we can verify this front bank unit is correct for your M2 Competition, M3 or M4.

Manufacturer and warranty

Manufacturer: BMW

Warranty: Two years manufacturer warranty for UK customers and one year manufacturer warranty for international customers when a VIN is provided at checkout on compatible vehicles.

What owners say

Customers report stock-like spool, consistent boost and quiet operation after replacing the tired front bank turbo with this OE unit. It is the trusted choice for a reliable F8x S55 turbo replacement without compromise.

Common search terms

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