MMR High Performance Intercooler FMIC for BMW N55 F2x F3x (F20 F21 F22 F30 F31 F32) M135i M235i 335i 435i Stepped Bar & Plate, Direct Fit Front Mount

Uprated Charge Air Cooler for BMW F20 F21 F22 F30 F31 F32 N55 - M135i M235i 335i 435i

Give your turbocharged six the cooling headroom it deserves with the MMR stepped bar and plate front-mounted charge cooler. Designed for the F-series N55 platform, this direct bolt-on unit slashes intake temperatures, fights heat soak and keeps power consistent on the road and during spirited runs. It is a straight swap in the factory position, delivering big-car cooling performance without compromise.

We have fitted this cooler on our own cars and many customer builds and the feedback has been superb. Sharper response, cooler charge temps and repeatable performance run after run with OEM-like fit and finish.

Why it works

• Stepped bar and plate core for outstanding thermal capacity and real-world cooling efficiency
• Core size 520 mm x 215 mm x 145 mm with internal turbulators to maximise heat rejection
• Computationally optimised end tanks for smooth airflow and minimal pressure loss
• Around 70 percent larger frontal area and roughly 90 percent more internal volume than the factory cooler to resist heat soak
• Durable heat-dissipating coating for long-term reliability and stable performance
• Direct replacement - no cutting or permanent modifications required
• Approximate weight 11 kg - chosen to balance cooling performance with pressure drop and throttle response

Real gains you can feel

Lower charge temps mean the N55 can maintain timing and deliver consistent power, especially on tuned cars and during back-to-back acceleration. Expect strong, repeatable performance with crisp spool and the confidence that your turbo system is protected from temperature creep.

Road and fast-road focused

MMR offer two coolers for the F-series N55. This High Performance version uses a robust bar and plate stepped core, making it our go-to choice for daily-driven and fast-road cars where thermal capacity and reliability are key. A Competition tube and fin option is available if absolute low core mass is the priority.

Compatibility

• BMW 1 Series F20 F21 - M135i N55
• BMW 2 Series F22 - M235i N55
• BMW 3 Series F30 F31 - 335i N55
• BMW 4 Series F32 - 435i N55

Note: not suitable for convertible models.

Fitting and support

This is a plug-and-play upgrade using the factory location and connections. For professional installation, book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

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