CSF Cooling - Racing & High Performance Division BMW E39 M5 / 540i (MT) High-Performance All-Aluminum Radiator (7064) 1529 remove the coupler and lower

remove the coupler and lower tube from the upper tube

we did extensive real-world dyno testing comparing our header design to the factory header as well as some of the most popular headers on the market

Adds 19 whp and 31 ft/lbs of torque at 3300 RPM

Drag and hi-performance Street

This coupling features a diameter of 4 IN on one end and 3 IN on the other

CSF Cooling - Racing & High Performance Division BMW E39 M5 / 540i (MT) High-Performance All-Aluminum Radiator (7064) 1529 remove the coupler and lowerBMW E39 M5 540i (MT) High Performance All Aluminum Radiator. CSF manufactures the most advanced and efficient radiator in the industry for your E39 M5 540i. CSF uses innovative tube and fin technologies with industry leading testing methods to maximize airflow and heat dissipation. CSF has over 5 decades of experience manufacturing radiators. So when it comes to keeping your engine cool and your E39 M5 540i running at its best, a CSF High Performance