Koyo Performance Radiator - Mazda RX-7 FC 1.3L Turbo N-FLO Dual Pass 1986-1991
Koyo Performance Radiator - Mazda RX-7 FC 1.3L Turbo N-FLO Dual Pass 1986-1991
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Universal fit
No vehicle selection needed.
This part may still fit. Check the details below or contact us before ordering. Ask about fitment
Fitment not confirmed
This part may still fit. Check the details below or contact us before ordering. Ask about fitment
Vehicle fitment
This part is listed to fit the following vehicles.
In Melbourne? Fit it in our workshop.
We fit parts in-house at the RevZone workshop. Book a time and bring your car in.
Description
Application: Mazda RX-7 | FC3C / FC3S (2D Convertible & 2D Coupe) | 13B-DEI 1.3L Turbo Petrol RWD | 1986-1991
Part Number: HH060643N
The FC RX-7 is a compact, tightly packaged rotary platform that generates serious heat - especially when running more boost or pushing the 13B harder on track. The factory cooling system was engineered to cope under standard conditions, but it quickly becomes the limiting factor when performance demands increase.
Koyorad's N-FLO Technology was developed specifically for applications like this. Where the factory inlet and outlet locations allow proper placement, Koyorad precision-welds aluminium partitions into the upper and lower tanks, creating a double-pass coolant flow path. This keeps coolant in the radiator longer, transferring significantly more heat to the surrounding air before returning to the engine - a meaningful upgrade over a conventional single-pass design.
The result is a direct bolt-in radiator that retains all OEM fan shroud mounts and stock hose connections, with no engine modifications required. Built to the same exacting standards as every Koyorad All Aluminium Racing Radiator - Nocolok furnace brazed, precision TIG welded by hand, and triple pressure tested.
Why Koyorad?
- N-FLO Dual Pass Technology - Aluminium partitions in the upper and lower tanks create a double-pass coolant flow, maximising heat transfer and cooling efficiency.
- Precise Tube & Fin Alignment - Strict quality control ensures optimal coolant flow and maximum heat transfer efficiency across the entire core.
- Nocolok Furnace Brazing - All tubes, fins, headers, and brackets are bonded in a state-of-the-art Nocolok furnace, creating a structure that resists vibration, road debris, and the elements.
- Billet Filler Neck - Precision-machined billet filler necks are fitted to every unit for superior strength, durability, and a reliable seal.
- OE-Specific Mounting & Hand-Crafted Heliarc Welds - Application-specific mounting points and individually hand-welded construction ensure a pain-free install and the strongest possible aluminium-to-aluminium bond.
Fitment
| Year | Make | Model | Chassis | Submodel |
|---|---|---|---|---|
| 1986-1991 | Mazda | RX-7 | FC3C (2D Convertible) | Turbo - 13B-DEI 1.3L Turbo Petrol RWD (146kW) |
| 1986-1991 | Mazda | RX-7 | FC3S (2D Coupe) | Base - 13B 1.3L Aspirated Petrol RWD (110kW) |
| 1986-1991 | Mazda | RX-7 | FC3S (2D Coupe) | Turbo - 13B-DEI 1.3L Turbo Petrol RWD (146kW) |
Sold individually. Lead times may apply - contact us for availability and shipping estimates.
Specifications
- Brand
- Koyo
- Part Number
- HH060643N
- Core Type
- N-FLO Dual Pass
- Construction
- All Aluminium, Nocolok Brazed, Heliarc Welded
- Fan Shroud
- Retains OEM mounts
- Hoses
- Compatible with stock radiator hoses
- Fitment
- Direct bolt-in, no modifications required
Shipping
Orders are processed within 1-2 business days (Monday to Friday), and orders placed before 12pm AEST are usually dispatched the same day. Once dispatched, standard shipping takes 3-7 business days and express 1-3, with tracking emailed as your order leaves.
If part of your order is out of stock, we'll contact you with the option to split the shipment or hold it until everything is ready. Read the full shipping policy.
Returns
You have 14 days from delivery to request a return on unused parts in their original packaging. Refunds incur a 15% restocking fee (20% for special orders), or choose store credit and the full purchase value is applied to your account.
Parts that have been test fitted, installed, or used can't be returned, and special-order or overseas-ordered items are assessed case by case. Faulty or incorrectly supplied items are always covered at no cost to you. Read the full returns policy.
