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BMW 335i F3x I N55


Why fit?

Keep cool with the MMR 'Competition' Intercooler for the BMW 335i F3x. Our highest-spec, super efficient Tube and Fin stepped core minimises pressure drops, and improves power & torque output significantly by substantially reducing charge air temperatures from - with 70% greater frontal area and almost double the internal volume vs OE.

Benefits of fitting?

The MMR Competition Intercooler for the N55-powered BMW 335i F3x uses a Tube and Fin construction to minimise pressure drop. This gives maximum power and torque outputs, and substantially reducing charge air temperatures versus the OE cooling setup.

The factory intercooler used on the N55 engines has proved to be unable to cope with the demands of higher power, hard driven cars, showing up as serious power losses during hard driving as air temperatures soar, and long recovery cool-down times needed.

Using a huge Tube and Fine with a stepped core, our Competition Intercooler provides almost double the core volume of the OE unit and a frontal area around 70% greater than OE, too. That's a really significant difference. The stepped core itself uses internal turbulators to improve its cooling performance and the CFD optimised end tanks assist with maintaining the best possible airflow across the core.

We offer two types of Intercooler for the N55 Fx cars. As well as this Competition version, we offer our High Performance unit, which uses Bar and Plate construction.

We recommend this Competition version for the highest performance applications, as the pressure drop is always lower for Tube and Fin construction to ensure the highest possible airflow (and hence power output). It also has the benefit of being lighter weight, but is a little more expensive than our High Performance unit.

Our development focussed on finding the ‘sweet spot’ of maximum IAT cooling versus minimum pressure loss. This has allowed us to achieve increased size without increased lag.






3 Series


F30 I F31




2011 - 2019

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> Tube and Fin stepped core
> 70% larger frontal area than OE
> 90% more internal volume than OE
> Delivers substantial temperature drop across the core, with minimal impact on pressure drop
> Anti-corrosive thermal coating
> Easy installation, not cutting or permanent modification to the vehicle required
> Not suitable for convertible models





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How we develop.

Every MMR Performance upgrade is developed and tested here in the UK by our expert engineering team of BMW enthusiasts.

Nothing gets the MMR logo until we've thoroughly proven it on road, track and dyno.

That's the MMR Performance difference.


How to buy?

Our network of expert MMR Performance dealers can supply the full range, together with product guidance and advice, plus often an experience fitting service.


If you haven't got a MMR Performance Partner Dealer close to you, don't worry! Remember you can buy direct from our MMR Performance webshop. Click here to browse and shop online, for worldwide despatch.


Prefer to buy online?

You can buy direct from our MMR Performance webshop. Click here to browse and shop online, for worldwide despatch.

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