Put this on my B58 F30 after intake temps kept climbing on back to back pulls. Huge difference, temps drop way faster now and stay put even on a hot track day. Fitment was perfect, lined up with every mount
Сoolant radiator, water-cooled intercooler circuit suitable for BMW F2x and F3x 18-40i B48 and B58 engines
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New B-series engines (B38/218i, B48/20i, B58/40i) use water-cooled charge air, like the S55. An intercooler in the intake manifold cools air via water, kept cool by a front radiator ahead of the main coolant radiator.
Two circuits:
- High-temp: 80–120°C (engine)
- Low-temp: 10–60°C (charge air)
Since no manifold-cooler upgrade exists yet, this front radiator is the fix.
Upgrade features:
- Tube & fin core
- +4L water volume
- Max-size core for the chassis
- Aluminum end tanks (vs. stock plastic)
- Replaces part 17118741830
Test results (M240i, Pure800, W/M injection, ~650hp, 5°C ambient, 10 pulls in 4th gear 2,000–6,800rpm):
- Stock radiator: up to 35°C
- Upgrade radiator: up to 26°C
Fits:
- B38 F22/F23 218i
- B48 F2x/F3x 18i/20i/25i/30i
- B58 F2x/F3x 40i
- Verkäufer TunePoint Europe
FAQ
Welche Funktion hat dieser Kühler im wassergekühlten Ladeluftkühlerkreislauf?
Passt es bei B48 und B58 in den Bereich von 18i bis 40i?
Ersetzt es den werkseitigen Niedertemperaturkühler oder wird es zusätzlich dazu eingebaut?
Muss der Kühlmittelkreislauf nach dem Einbau entlüftet werden?
Hilft ein größerer Circuit-Kühler gegen Hitzestau?
Lohnt sich dieses Upgrade bei einem serienmäßigen Fahrzeug?
Customer Reviews
6 reviews
Great upgrade, IATs stay in check now and it bolted right in. No complaints
Grabbed this because the stock intercooler circuit just couldn't keep up once I turned the boost up. Bigger core, better flow, and heat soak is basically gone now. Build quality is a step above OEM for sure
Radiator itself is quality, welds are clean and it fit like factory. Shipping took a bit longer than I'd hoped but it showed up boxed well with no bent fins
Had my shop install it on my B48 and they said everything lined up with zero fuss. Consistent temps now even when I'm hammering it, no more pulling timing from heat. Money well spent
Was worried about fitment since my car's got other mods crammed in there, but it slotted right in. Rep confirmed it fit my chassis before I ordered. Temps are rock solid now, best cooling mod I've done
