Genuine OEM BMW S55 Engine Water Pump / Coolant Circulation Pump 11517846361 (11 51 7 846 361) – Fits F80 M3, F82/F83 M4, F87 M2 Competition (incl. M4 GTS/CS) – OE Cooling Pump Replacement

Authentic BMW S55 Coolant Circulation Pump - Part No. 11517846361

Restore factory-spec temperature control on your turbocharged S55 with this authentic BMW cooling pump. This OE engine coolant circulation unit is the exact BMW part your M car left the factory with, ensuring proper flow, quiet operation and long-term reliability for F80 M3, F82 and F83 M4, and F87 M2 Competition models.

At MJ Modifications we install these units regularly and have run them on our own cars. Fitment is spot on, bleeding is straightforward, and customers consistently report stable coolant temperatures on the road and during hard track use. If you are chasing intermittent overheating, pink residue around the housing, or bearing noise from the front of the block, this replacement pump is the proven fix.

Why choose this OE cooling pump

• Original equipment from BMW for the S55 straight-six - no pattern-part guesswork
• Plug-and-play fit with factory hose routing and correct pulley alignment
• Maintains designed flow rate and keeps temperatures consistent under boost
• Reliable choice for preventative maintenance and to cure leaks or rumbling bearings
• Ideal to combine with fresh drive belt, idlers and new seals during a cooling system refresh

Typical signs your pump is due

• Coolant marks or drips beneath the front of the engine
• Growling or chirping from the pump area as the revs change
• Temperature warnings, creeping temps in traffic, or heat soak after spirited driving
• Play in the pulley or visible wobble with the belt removed

Left unresolved, a worn belt-driven pump can escalate into serious engine damage. Swapping to a new authentic BMW unit restores confidence and protects your S55 during daily driving and track days.

Fitment

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

Part number

11517846361 (also written as 11 51 7 846 361)

Made by

BMW - genuine OE component

Compatibility check

We verify fitment before dispatch. Add your UK registration or last 7 of the VIN at checkout so we can confirm you receive the correct pump for your chassis.

Professional fitting

Need it installed properly first time? Book fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quotation and availability.

Warranty

Supplied with a 2-year manufacturer warranty for UK customers and 1-year for international customers when a valid VIN is provided on compatible vehicles.

Recommended while you are there

• Fresh coolant to BMW spec
• New O-ring or gasket set
• Auxiliary drive belt and tensioner inspection or renewal

Buy with confidence

MJ Modifications supplies authentic BMW parts to performance-focused owners who demand perfect fitment, OE quality and reliable cooling. Order Part No. 11517846361 today to safeguard your S55 and keep your M2 Competition, M3 or M4 running at its best.

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