BMW S55 F80 M3 F82 M4 F83 M4 F87 M2 Competition left auxiliary radiator 17112284603

Direct-fit left auxiliary radiator for S55-powered BMWs. This is the genuine BMW part - not a pattern copy - with identical flow path, mounting points and cooling capacity to the unit fitted at the factory.

• Replaces ageing, leaking or corroded units without modification
• Proven cooling for fast road, track day or daily driver use
• No guesswork: exact OEM fitment on F80 M3, F82/F83 M4 and F87 M2 Competition
• BMW part number 17112284603 - verified in stock and ready to ship

Not a 'performance upgrade' in the bolt-on sense - but if your S55 runs hot under load or you’re prepping for summer or track work, this is the sensible, no-nonsense fix.