CSF BMW F Chassis 2/3/4 Series Manual RadiatorProduct Information All aluminum construction with a high capacity 2 row 42mm dual core. Increase in cooling efficiency over factory unit. Heat is a major factor in high performance vehicles. When operating fluids are pushed to the limit, they require additional cooling over stock applications. This high performance radiator from CSF Racing is made to handle all of your cooling needs. Not for cars with M Sport Package P337A. Manual Trans ONLY CSF Part