R SERIES 53mm Core Thickness
Built with a robust 53mm core, the R-Core Series is engineered for the serious performance tuner. Increased capacity means better cooling reserve when you need it. Intended for both circuit and daily use, you may double your coolant capacity and see up to 35% increased performance over your stock radiator. Unless noted otherwise, all Koyorad R-Series All Aluminum Radiators are Nocolok brazed, designed as a factory fit, direct bolt in with no engine modifications necessary, and retain mounts for the stock fan shrouds and fans. 

N-FLO Technology
When factory equipped radiators have inlet and outlet locations that allow proper placement, Koyorad carefully welds aluminum partitions in the upper and lower tanks of the radiator. This is Koyorad’s N-Flo Technology which allows for a double or triple pass radiator. This design cools more efficiently by allowing the coolant to remain in the radiator for a longer period of time therefore transferring more heat to the surrounding air. N-Flo Technology is available on cars that are known to have limited airflow to the radiator. Unless noted otherwise, all Koyorad N-Flo Aluminum Radiators are Nocolok brazed, designed as a factory fit, direct bolt in with no engine modifications necessary, and retain mounts for the stock fan shrouds and fans. 

Note: 
53mm thick, two row, dual pass crossflow core. Also fits 95-98 240SX with minor modifications. Dexcool type coolant should not be used. Only conventional "Green" 50/50 antifreeze/coolant premix is recommended. Compatible with 89-94 240SX KA24E/DE fan shrouds. Shroud will require slight modification near inlet and outlet to line up mounting bolts due to crossflow configuration.

Fitment:
NOTE: For V8 Swap or KA24 Turbo Only. For Manual Transmission Only.
89-90 Nissan 240SX 2.4 KA24E 
91-94 Nissan 240SX 2.4 KA24DE
95-98 Nissan 240SX 2.4 KA24DE