CSF BMW G8X M3/M4/M2 High-Performance Auxiliary Radiator - Single Radiator

If you're pushing your BMW G8X M3, M4, or M2 hard, especially on the track or with a heavily modified engine, keeping coolant temperatures in check is crucial. This high-performance auxiliary radiator from CSF is designed to work alongside your factory cooling system, helping to reduce temperatures and extend the time before heat soak becomes an issue. It's a smart addition if you're looking to prevent your car from entering limp mode due to high temps, which can happen when engines are making over 1000 horsepower.

Compared to the stock plastic tanks, CSF's units feature larger, TIG-welded aluminum tanks for increased fluid volume and better strength. The core itself is a 2-row, 42mm design that utilizes CSF's B-tube technology and advanced 5mm fins. These fins are designed to maximize airflow and heat dissipation, significantly increasing the surface area for better heat exchange and improved cooling recovery. CSF also includes bolt-on rock guards to protect the cooler from road debris, a common failure point for OEM units. The all-aluminum construction and stronger mounting brackets offer better durability than the factory plastic components.

This radiator is designed as a true 'drop-in fit,' meaning it installs in the factory location using the OEM quick connections, so no modifications are needed. It fits both the left and right sides, and each is sold individually. The satin black finish gives it a clean, OEM+ look behind the grille.