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Koyorad VH423704 Heat Exchanger for F8X M2 M3 M4



Reduce Intake Air Temperatures (IAT) with Koyorad's new all-aluminum high-performance front mount heat exchanger for the 15-20 BMW F8X: M3, M4, and M2 Competition. Our high-density core is 33% thicker than the OEM heat exchanger core, yet was specifically designed with a slimmer profile than most competitors to have minimal impact to the airflow through to the radiator behind it.  This heat exchanger retains 100% of the OEM style mounts and hoses, with CNC machined billet components and quick connect fittings requiring no modifications.


  • 100% Plug and Play, no modifications or cutting necessary
  • OEM style CNC billet quick-connect inlet and outlet provisions
  • 2 Row, high density 36mm thick, 49 tube (OEM 37 tube) Hyper Core
  • Lightweight heat exchanger upgrade, resulting in minimal stress on the plastic OEM heat exchanger mounts
  • 33% increase in core thickness over OEM heat exchanger core with minimal airflow restriction to the radiator
  • NFLO Dual Pass Technology
  • All aluminum construction, high polished finish, TIG welded and furnace brazed
  • Triple pressure tested during manufacturing process

Part #



  • 15-20 M3 and M4 (F80 F82 F83)
  • 19-20 M2 Competition (F87)


Heat Exchanger: OEM equivalent: 17112284608 

Box Dimensions:

30” x 23” x 7”

12 lbs.



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