Koyo all aluminum racing radiators for 1983-1985 FB RX-7 (12A and 13B models), 1986-1991 FC RX-7 (Turbo II and Non-Turbo models), and 1993-2002 FD RX-7.
With over 50 years of experience in the manufacturing of OE replacement radiators, it was only natural that Koyo develop a lightweight, high performance radiator line. We are proud to offer their all aluminum performance radiators designed as a true drop in installation for select vehicles, utilizing the factory equipped fan shrouds without any modifications necessary.
PLEASE NOTE: These radiators are designed specifically for Manual Transmission vehicles only. If installing one of these radiators into an Automatic vehicle, a separate transmission cooler MUST be installed.
HH063146: 1983-1985 FB RX-7 (Manual Transmission ONLY). Compatible with 12A and 13B models.
HH060642: 1986-1988 FC RX-7 (Manual Transmission ONLY). Compatible with Turbo II and Non-Turbo models. 48mm, Single Pass Core
HH060643: 1989-1991 FC RX-7 (Manual Transmission ONLY).Compatible with Turbo II and Non-Turbo models. 48mm, Single Pass Core
HH060644: 1993-2002 FD RX-7 (Manual Transmission ONLY) .48mm, Single Pass Core
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.
HH060643N:1989-1991 FC RX-7 (Manual Transmission ONLY). Compatible with Turbo II and Non-Turbo models. N-FLO 48mm, Dual Pass Core
HH060644N:1993-2002 FD RX-7 (Manual Transmission ONLY). N-FLO 48mm, Dual Pass Core
