Forge Motorsport PolarCooler for BMW B58 Engine
Upgrade your BMW A90 Supra with the Forge Motorsport PolarCooler, the first auxiliary cooling system designed specifically for the BMW B58 engine. This chargecooler is a must-have for keen modifiers looking to push the limits of their A90, providing a significant increase in volume and improved cooling efficiency.
The Forge Motorsport PolarCooler features a specially designed 18 fpi louvre super tech cooling core, offering over 170% extra capacity compared to the OEM chargecooler radiator. With its triple pass water flow design, this chargecooler ensures maximum utilization of the core’s surface area, resulting in lower inlet temperatures by up to 20°C (68°F) during dyno testing.
Designed to replace the OEM chargecooler radiator, the Forge Motorsport PolarCooler is available in a powder coated satin Black finish or motorsport raw Alloy. Its hand fabricated end tanks and core are coated with an anti-corrosion black powder coat or left in raw alloy finish for added durability.
With an increase in water volume and improved cooling performance, the Forge Motorsport PolarCooler helps to keep thermal temperatures at a reduced level for longer periods. This ensures greater performance and efficiency, making it perfect for fast road and track enthusiasts. Compared to the OEM chargecooler, the Forge radiator has a volume of 23 litres, significantly larger than the OEM’s 8.3 litres.
The Forge Motorsport PolarCooler is designed, developed, and manufactured entirely in Great Britain and is covered by a worldwide lifetime warranty. Installation of this product typically takes around 4-5 hours. Fitting of the part is available at our performance workshop at Progressive Parts.





