Miata Radiator KOYO 37mm Aluminum..V2277 :: 99-05

This is Koyo's ALL ALUMINUM Miata Racing Performance Radiator. Produced in Japan, its all aluminum construction is held to tight quality control standards that are illustrated in the outstanding Heliarc soldering, pristine tube and fin alignment, and mirror-like surface finish.

This Miata radiator unit is completely plug and play with all OEM hardware and thicker aftermarket sway bars! Koyo smartly designed their Miata radiator to take the factory cap, factory fans and even the factory plug so that service at your local dealer is not a problem and replacement parts are as close as your local autoparts store or Mazda dealer.

We asked KOYO to make a Miata radiator that is slightly thinner than their monster 55m Miata radiator and this is it. The 55mm Koyo Miata radiator is plug and play with all factory hardware but pushes the factory fan housing back enough that they need to be trimmed to fit with LARGER aftermarket sway bars.

But this 37mm koyo Miata radiator fits with all OEM hardware and thicker aftermarket sway bars without having to trim the fan housings. Also very popular with the spec Miata racers because it cures most overheating issues without adding quite as much water weight as the 55mm core.

Intended for manual transmission Miata only. NOTE that owners of the 04-05 MazdaSpeed Miata will need to slot or bend brackets for the factory AC condenser and move that assembly forward a little to clear this much larger radiator.