After unpacking ProSeries stud bolts

5mm–1mm larger than the gasket bore

Chromoly 108mm inner CV with aerospace-grade internals

A bespoke 1-7/8" aluminum wrench is provided for tightening the B-nut and prevent marring

- BMW F87 M2 Competition S55 3

CSF High Performance Aluminum Radiator, BMW E46 M3 M62 Turbo After unpacking ProSeries stud boltsWith a legacy of over fifty years in automotive cooling technology, has engineered an advanced, high performance radiator that surpasses the capabilities of the OEM unit. Beginning with a two row, triple pass design to achieve optimal temperatures, this radiator is equipped with precision CNC machined brackets and hardware of superior quality. Importantly, it seamlessly fits into place like the stock radiator, requiring no modifications during