If you're interested in swapping a Sr20DET into your S13 chassis or you're looking to replace your tired worn out radiator, A Koyo Aluminum Radiator is a crucial upgrade for your SR20DET. Koyo Radiators are built with High quality Aluminum and have polished Tanks.
 
The "R" series aluminum radiators feature a 53mm (2 1/16 in) thick, all aluminum core brazed to polished aluminum 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 aluminum end tanks are hand crafted using the latest Heliarc Soldering technique for the most reliable connections, then polished to a mirror finish.All Koyo Racing series radiators have "OE Specification" mounting location for stock mounting without major modifications. 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.
 
Below are suggested items to purchase along with your new Koyo Radiator.
 
Greddy SR20DET Radiator Hoses (PAIR) | HDT AUTOMOTIVE
 
KOYO Racing Radiator Cap Red 1.3 Bar | HDT AUTOMOTIVE