Evolution Racewerks ER BMW N55 Oil Cooler Upgrade - M2, M135i, M235i, 335i, 435i
Part number: BM-COOL007
Stop high oil temperatures from holding your BMW N55 back. The Evolution Racewerks ER Oil Cooler Upgrade is the proven, race-developed solution for BMW M2, M135i, M235i, 335i and 435i owners who drive hard on road and track. The factory cooler is small and the N55 runs hot, often seeing 250 degrees after a few minutes of spirited driving. Hot oil shears and breaks down, reducing protection for bearings and shortening engine life. This ER upgrade maximises oil cooling, stabilises temperatures and improves reliability and longevity on tuned and stock cars alike.
We run this kit on our own cars and customer builds, and the results are exactly what you want from a premium BMW N55 oil cooler kit - faster recovery, lower peak temperatures and confident performance lap after lap. Feedback from Nforcd customers has been consistently positive.
Why choose the ER N55 Oil Cooler Upgrade
- Huge core increase - factory: 8.75 x 4.75 x 1 inch core volume 41 cubic inches. ER Sports Series: 11 x 8 x 2 inch overall with a 9 x 8 x 2 inch core - 144 cubic inches. That is over 350 percent larger capacity than stock for serious cooling headroom.
- Race-bred enclosure - the cooler mounts inside a dedicated box with rear louvres to maintain airflow while protecting against debris thrown up by the front tyres. Developed on the ER 135i Time Attack car and brought to the N55 platform.
- Premium hardware - high quality Goodrich black anodised AN fittings and Goodrich stainless steel braided oil lines throughout. No cheap fittings.
- Retains the factory oil heatsink for additional cooling capacity.
- Optional aluminium shrouding to seal and direct airflow through the cores for maximum efficiency. Model and bumper specific.
- Available finishes - raw silver or Type III Hard Anodised Black for a stealth look and tougher fins that better resist damage from stones and debris.
- Developed and tested on track - designed for reliability under sustained load.
- Includes all hardware - a complete, bolt-on BMW N55 oil cooler kit.
- Limited Lifetime Warranty from Evolution Racewerks.
Keep your N55 cool and protected
Lower stable oil temperatures reduce thermal degradation, maintain viscosity and protect bearings. Whether your BMW is a daily driver, fast road build or a full track toy, this BMW N55 oil cooler upgrade delivers consistent performance and confidence when you push your M2, M135i, M235i, 335i or 435i hard.
Finish option - Type III Hard Anodised Black
For those who want a stealth look and extra durability, ER offers a Type III Hard Anodised Black finish. This hard anodising strengthens the fins making them more resistant to bending and impact from road debris while showing no noticeable ill effect on cooling performance. It is the same finish ER developed for harsh rally conditions and later adopted on street applications.
Compatibility - BMW N55
- BMW M2 N55
- BMW M135i N55
- BMW M235i N55
- BMW 335i N55
- BMW 435i N55
Kit highlights and specs
- ER Sports Series oil cooler core: 9 x 8 x 2 inches - overall 11 x 8 x 2 inches
- Factory oil cooler core: 8.75 x 4.75 x 1 inch
- Core volume increase: 41 cubic inches stock to 144 cubic inches ER
- Box enclosure with louvres for airflow and protection
- Goodrich black anodised AN fittings - no low quality components
- Goodrich stainless steel braided oil lines
- All brackets and hardware included
Perfect for road and track
Choose the Evolution Racewerks ER BMW N55 oil cooler kit if you want a direct-fit, high capacity BMW M2 oil cooler, BMW 335i oil cooler, BMW 435i oil cooler, BMW M135i oil cooler or BMW M235i oil cooler upgrade that keeps oil temperatures in check during hard use, prevents oil breakdown and supports engine longevity.
Fitting and support
Professional installation recommended. For fitting, book with Nforcd in Warwickshire - request a quote at Sales@nforcd.com.
Warranty
Evolution Racewerks Limited Lifetime Warranty - non transferable.
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