KOYORAD Performance Radiator
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Koyo Performance Radiator - Nissan Skyline GTS25-T / GT-R (BCNR33) - MT
Koyorad builds all aluminium radiators to OE specification and beyond, using Nocolok furnace brazing and hand laid Heliarc welding for a stronger, more heat resistant core than the factory unit. This performance radiator, SKU HH020442 (also listed as KH020442), is a direct bolt-in upgrade for the Nissan Skyline RB25DET and RB26DETT platforms, built to keep coolant temps in check under boost.
This listing covers the Nissan Skyline GTS25-T (HCR33) with the RB25DET, and the Nissan Skyline GT-R (BCNR33) with the RB26DETT, both manual transmission only.
Note: This radiator does not fit the Nissan Skyline GT-R BNR34. A separate Koyorad part number is required for that chassis.
Specifications
- Core thickness: 48mm
- Core dimensions (H x W): 400 x 643/671mm
- Inlet/outlet diameter: 35mm (top and bottom)
- Drain plug: M16
- Construction: all aluminium, Nocolok brazed, Heliarc welded
- Retains OEM fan shroud mounts and stock hose fittings
- Direct bolt-in, no modifications required
- Sold individually, manual transmission fitment only
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please confirm your chassis and transmission type 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 |
|---|---|---|---|
| Nissan | Skyline GT-R | BCNR33 | RB26DETT |
| Nissan | Skyline GTS25-T | RB25DET |
Technical Specifications
| Spec | Value |
|---|---|
| Part Number | HH020442 / KH020442 |
| Core Thickness | 48mm |
| Core Dimensions (H × W) | 400 × 643/671mm |
| Tube Pitch | 55/55 × 670mm |
| Inlet / Outlet Diameter | Ø35mm (top & bottom) |
| Drain Plug | M16 |
| Construction | All aluminium, Nocolok brazed, Heliarc welded |
| Transmission | Manual (MT) |
| Fan Shroud | Retains OEM mounts |
| Hoses | Compatible with stock radiator hoses |
| Fitment | Direct bolt-in, no modifications required |
| OEM Cross Reference | Nissan OEM 21410 15U00 |
No instructions available for this product.

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