CSF Charge-Air Cooler Manifold (intercooler) - BMW G80 | G81 M3 | G82 | G83 M4 | G87 M2CSFs industry leading reputation and deep knowledge of high performance BMW cooling systems is second to none. CSF is proud to announce its new halo product, the Level Up Charge Air Cooler Manifold for the 2021+ G8X M3 M4 platform. CSF set out to create a charge air manifold that would not only match the S58 engine performance, but take it to a whole other level with its ultra high performance features and durability. Design, Engineering, and