Koyorad Aluminium Radiator - BMW E46 M3

Koyorad Aluminium Radiator - BMW E46 M3

- Material: Aviation-grade aluminium

- Manufacturing: TIG welded by hand

- Size: 394x580x48mm

- Made in Japan

- Koyo part no. KH422675

Compatible with all BMW E46 M3 with S54B32 engine.

Upgrade your BMW E46’s cooling system with this high-performance aluminium radiator from Koyo, designed for both daily driving and track use. Crafted from lightweight aviation-grade aluminium with a polished finish, this radiator installs directly in place of the factory unit using all original mounting points, stock fans, shrouds, sensors, and drain plugs, no modifications required.

Featuring Koyo’s exclusive N-Flo Technology, the radiator incorporates “N” shaped internal partitions that extend coolant flow time and maximize cooling efficiency across the entire core. This advanced design, combined with aluminium’s superior thermal conductivity, delivers up to 50% better cooling performance than standard radiators, helping to reduce operating temperatures and enhance engine reliability.

Note: This item is available on backorder only. Estimated arrival time is 1 week. Orders will be shipped as soon as stock is available.