Koyorad: Alloy Radiator: MAZDA Savanna / RX-7 FC3S 89-91
Upgrade your Mazda Savanna/RX‑7 FC3S (1989–1991, rotary 13B-T) with the Koyorad KL060643R performance radiator, featuring a thick 53 mm R‑Series core that delivers 20–30 % more cooling capacity than the OEM unit. Built with all‑aluminum construction, precision TIG welding, and Nocolok brazing, this radiator ensures exceptional durability and leak-free reliability. Its N‑Flo triple-pass design increases coolant dwell time for optimal thermal efficiency. Engineered as a direct-fit bolt-in replacement, it retains factory brackets, hoses, fans, and filler neck—no modifications required. A polished mirror finish and billet filler neck complete the high-performance look, making this a plug‑and‑play cooling solution for daily drivers and track enthusiasts alike.
USA Part Nos.: N/A
OEM Part Nos: N/A
Car Models: Savanna / RX-7 FC 1.3 01/89-
Engine code(s): 13B-T
Diagrams:
Koyorad Code Notes
KS* 25mm core thickness, 1 row
KV* 36mm core thickness, 2 row
KH* 48mm core thickness, 2 row
KL* 53mm core thickness, 2 row
V / U06* at the end = deviation from OE
R* at the end = widerfin pitch
N* at the end = N flow, a partition in the tank to create N shape coolant flow for better cooling efficiency, triple pass
Material is Full Aluminum
Transmission - ALL MT type (No oil cooler), except for models with w/ OC indication. AT needs external oilcooler.
Fillerneck - All radiators with fillerneck are excl caps, these require the old system caps.
Please note that all cross references information are subject to errors and changes. Stock Images Used. Actual Product May Vary.