CSF High-Performance stepped core bar/plate intercooler (Black) - E9X 335i

FMIC upgrade for BMW twin‑turbo straight‑six engines

Unlock reliable, repeatable power on remapped N54 and N55 cars with this CSF stepped bar and plate front mount charge cooler. Designed to keep charge temperatures under control on spirited road drives and track days, it delivers the consistency your tune deserves while keeping a stealth look in its black finish.

Why enthusiasts choose this CSF charge cooler

• Massive cooling capability with a stepped core that presents far more frontal area to incoming air for superior heat rejection.
• Approximately 85 percent larger face area and about 60 percent greater internal volume than the factory cooler, helping tame heat soak and maintain timing advance on tuned cars.
• High flow design with reduced pressure drop so your turbos work less hard, improving throttle response and mid‑range punch.
• Computer‑optimised internal flow path and rounded leading‑edge fins for efficient airflow through the core.
• CSF B‑tube technology increases surface area while keeping weight sensible and durability high.

Fitment and compatibility

Direct bolt‑on for the following BMW models that use the N54 or N55:

• E90, E92, E93 335i
• E82 135i
• E82 1M Coupe

Retains the factory quick‑connect couplers and hoses. Only minor trimming of a plastic heat shield is typically required. Front bumper removal is not usually necessary.

Real‑world results

We have fitted this unit on customer builds and our own workshop cars with excellent results. Expect noticeably cooler inlet temperatures, stronger back‑to‑back pulls and far better consistency on Stage 1, Stage 2 and hybrid‑turbo setups.

Finish options

Available in stealth black or silver to suit your build.

Ideal for

• BMW 335i FMIC upgrade searches
• N54 charge cooler and N55 charge cooler replacements
• E9X front mount cooler for remapped cars
• 1 Series 135i FMIC and 1M cooling upgrade
• Heat soak fix for tuned twin‑turbo sixes
• Track day and fast‑road cooling packages

Fitting service

Want it installed properly the first time? Book professional fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Upgrade your BMW’s charge‑air cooling and enjoy harder, longer pulls with confidence. This is the FMIC our customers ask for when they want performance that lasts the whole session, not just the first run.