Koyo Alloy High Performance Radiator - R Series - MR2 MK3, MR-S 

53mm Core

R SERIES 53mm Core Thickness

Koyo's "R" Series aluminium radiators feature an all-aluminium core brazed to polished aluminium end tanks for a show quality finish. Koyo uses state of the art Nocolok Brazing Furnace to bond all of the radiator brackets, headers, tubes, and fins, creating high quality "indestructible" radiator. All aluminium end tanks are hand crafted using the latest Heliarc Soldering technique for the most reliable connections, then polished to a mirror finish. Over 60 applications are available for Koyo "Racing" series.

All Koyo Racing series radiators have "OE Specification" mounting location for stock mounting without major modifications; however we recommend using aftermarket electric fans for the best results. Koyo Hyper Radiator Caps are also available to increase your cooling system pressure to 1.3 bar for increased cooling capacity. Racing series radiators were made for manual transmission only, however with a separate automatic transmission cooler; one can use the Koyo Racing Radiator with automatics for increased cooling capacity.

Koyorad quality is a direct result of their privately owned factories which allow Koyorad Japan to oversee each stage of radiator production. This ensures that quality is never sacrificed for quantity. 

These are just a few characteristics that have earned Koyorad Radiators their excellent reputation in performance radiators worldwide.

Note: For manual transmission (No oil cooler), except for models with w/ OC indication. Automatic transmissions needs external oil cooler.