KOYO Aluminum Radiator - 1990-97 Miata (R-Series 53mm - R1139) - Leave your cooling concerns behind with the installation of a KOYO Racing performance radiator. This massive 2 7/16" thick (53mm) radiator will provide all the cooling you will ever need for your Miata.
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. The tubes, fins, headers, and brackets are brazed in a state-of-the-art Nocolok furnace, which bonds these components into a virtually indestructible radiator unit.
All fan mounts are situated to OE specifications, and using the OEM mounting locations facilitates fitment. This R-Series KOYO Radiator is well suited for track applications, but will require trimming of the fan shroud if the car is equipped with larger aftermarket sway bars.
- MT only - Auto transmission models required the installation of an external transmission oil cooler.