KOYORAD Performance Radiator
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Koyo Performance Radiator - Mazda RX-7 FB S3 1983-1985 - 48mm
Koyorad builds every radiator in its own privately owned Japanese factories, hand assembling and Heliarc welding each core rather than relying on mass production shortcuts. This HH Series 48mm unit brings that same approach to the Mazda RX-7 FB, giving a classic rotary a cooling upgrade the factory plastic and aluminium radiator was never built to match.
This listing covers the Mazda RX-7 FB 2D Coupe, S3 1983-1985 including GSL-SE variants fitted with manual transmission. SKU HH063146 (cross reference KH063144).
Important: Automatic transmission vehicles require an external transmission cooler, as this radiator does not include a transmission cooler provision.
Specifications
- Core type: HH Series, ultra high fin density
- Core thickness: 48mm
- Core dimensions: 425 x 557/567mm
- Tube pitch: 55/55 x 570mm
- Inlet/outlet diameter: 38mm top and bottom, 17mm overflow
- Construction: all aluminium, Nocolok brazed, Heliarc welded by hand
- Billet filler neck
- M12 x 1.25 low coolant sensor provision on top tank centre
- Retains OEM fan shroud mounting points
- Direct bolt-in, no modifications required
- Sold individually
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please ensure your vehicle's year, trim level, and transmission configuration are confirmed before ordering.
Not sure if this radiator suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| Mazda | RX-7 | - |
Technical Specifications
| Spec | Value |
|---|---|
| Part Number | HH063146 / KH063144 |
| Core Type | HH Series — Ultra High Fin Density Core |
| Core Thickness | 48mm |
| Core Dimensions (H × W) | 425 × 557/567mm |
| Tube Pitch | 55/55 × 570mm |
| Inlet / Outlet Diameter | Ø38mm (top & bottom) / Ø17mm (overflow) |
| Construction | All aluminium, Nocolok brazed, Heliarc welded |
| Sensor Provision | M12 × 1.25 low coolant sensor (top tank centre) |
| Fan Shroud | Retains OEM mounts |
| Cross Reference | Koyorad HH063146 / KH063144 |
No instructions available for this product.
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