As our OEM radiator ages this could lead to leaking and bent fins, and over time this causes overheating. CSF’s aluminum radiator for 07-11 E8X, E9X (A/T) is an excellent brand to consider as a replacement for worn-out OEM parts. It is developed and built to deliver excellent results.

CSF uses a specifically built tube in the shape of a "B" rather than a conventional oval-shaped "O" type radiator tube. These "B-tubes" are meticulously constructed and then brazed to seal the seam. Because this design is actually stronger than standard "O" shape tubes that are welded,

CSF uses thinner and lighter aluminum material (higher cooling efficiency). This design increases the heat transfer surface area of the tubes by approximately 15% over regular tubes. You get the efficiency of 2 smaller tubes vs. 1 large tube within the same space criteria. With “B-tubes” you are able to get “dual liquid laminar flow.”

CSF uses ultra-efficient multi-louvered fins that are carefully and precisely aligned to maximize airflow through each radiator core. Fin specifications are carefully measured and calculated for each application and tested for maximum heat rejection efficiency in our wind-tunnel lab.

CSF manufactures the most advanced and efficient radiator cores in the industry by using innovative tube and fin technologies with industry-leading testing methods to maximize airflow and heat dissipation. These techniques allow CSF to stay ahead of the pack when it comes to radiator technology! ”

• OEM #: 17117547059