Proven to work by reducing operating temperatures on track, the AIRTEC Motorsport Power Steering Cooler Upgrade for the BMW E9x M3 features an enlarged core that increases capacity by an incredible 260% over standard, whilst frontal area is increased by 109% to help cool the extra capacity.
During extended periods of track or fast road use, the power steering fluid's operating temperature can climb too high, causing it to break down, overheat and ultimately damage the power steering pump. The AIRTEC Motorsport cooler is designed to combat exactly this — back-to-back track testing in June 2025 with a data-logging demonstrator car showed a peak temperature reduction of 49% (from 144.4°C to just 72.7°C) compared to the standard unit.
A direct replacement part, it fits in the original location using the original connections and fittings, and comes with a detailed fitting guide for simple installation.
260% increase in capacity over standard BMW power steering cooler
109% increase in frontal area
Proven 49% reduction in peak operating temperature
Direct replacement using original connections and fittings
