CSF Cooling - Racing & High Performance Division BMW E39 M5 / 540i (MT) High-Performance All-Aluminum Radiator (7064) 1529 This coupling features a diameter

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

Hawk Performance HB442B

a simple bolt-on XXL HJS German imported 200 cell HD European level 6 wash coat catalytic converters

Drag and hi-performance Street

and installs directly onto the vehicle over the factory piece

CSF Cooling - Racing & High Performance Division BMW E39 M5 / 540i (MT) High-Performance All-Aluminum Radiator (7064) 1529 This coupling features a diameterBMW 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