KOYORAD Radiator for Nissan Skyline R32 R33 R34 & GT-R

KOYORAD Radiators for Nissan Skyline R32, R33, R34 and R35 GT-R

KOYORAD aluminium radiators cover the RB-powered Nissan Skyline generations — R32, R33 and R34, in both GTS-T/GT-T and GT-R form — as well as the VR38DETT-powered R35 GT-R. The GT-R applications use KOYORAD's HH-Series 48mm high-fin-density core, and all units are designed as direct-fit replacements that use the factory radiator position, mounting points and hose locations. KOYORAD radiators are Japanese-engineered and built in KOYORAD's own ISO 9001 certified facility, and are shipped Australia-wide by Chicane Australia.

Shop by Vehicle & Brand

Models currently listed in this collection include the R32 Skyline GT-R/GTS-T (which also covers A31 Cefiro and C33 Laurel applications), BNR34 Skyline GT-R including the pre-2000 variant, and the R35 Nissan GT-R.

Choosing the Right Part — chassis codes and engine coverage

Chassis & engine coverage

R32 (1989–1994): Skyline GTS-T (RB20DET) and GT-R (RB26DETT) applications. The R32 radiator listing also covers A31 Cefiro and C33 Laurel.
R33 (1993–1998): Skyline GTS-T (RB25DET) and GT-R (RB26DETT) applications.
R34 (1998–2002): Skyline GT-T (RB25DET NEO), 25GT-Four (RB25DET) and GT-R (BNR34, RB26DETT) applications. Note that BNR34 listings are split between pre-2000 and later builds — check your build date before ordering.
R35 GT-R (2009–present): VR38DETT 3.8L twin-turbo V6 applications, covering R35-CBA, R35-DBA and R35-CBE chassis from 2009–2022, plus the 2024+ R35-4BA.

Why the HH-Series core is used on these cars

HH-Series is KOYORAD's premium high-fin-density construction with a 48mm core depth and tight fin spacing. It is specified for applications where the engine bay accommodates the thicker core without modification and where cooling demand is high — the RB26DETT and VR38DETT being obvious examples. On other platforms KOYORAD's V-Core 36mm or Hyper V-Core is the usual specification.

R35 GT-R — HH022360 specifications

Core: KOYORAD HH-Series 48mm Hyper Core, ultra-high fin density
Construction: All-aluminium, hand TIG-welded tanks, Nocolok-R brazed core
Finish: Mirror-polished aluminium
Mounting: OE-specific direct fit using factory mounting points and fan shrouds, no modification required
Accessory port: 1/8" NPT female fitting for an aftermarket water temperature sensor, supplied with a threaded plug
Filler neck: Billet aluminium
Coolant capacity: Approximately double the OEM unit's volume
Cooling performance: Up to 35% increase over the stock radiator, per KOYORAD

COBB Tuning runs the off-the-shelf HH022360 in their own R35 GT-R race car, without modification.

Where a radiator upgrade fits in a build

RB-powered Skylines in Australia are now 20+ years old, and factory plastic-tank radiators have a finite service life; an OEM-style replacement resets that clock rather than removing the constraint. Beyond standard power levels — boost control, exhaust, fuel system and ECU tuning, and certainly built RB26DETT or big-single RB25DET combinations on E85 — cooling demand sits well past the original design target. On the R35, coolant temperatures rise quickly once the car is tuned or used on track, which is where the larger HH-Series core is aimed.

Installation & What You'll Need

Installation by a qualified professional workshop is recommended. KOYORAD Skyline and R35 GT-R radiators fit the factory radiator position using OEM mounting points, OEM fan shroud bolts and OEM hose locations — no cutting, bracket modification or relocation of supporting components is required.

Check fan clearance (R35). The HH022360's 48mm core sits slightly forward of the OEM radiator's face, so fan blade clearance should be verified after fitment and before the battery is reconnected.
Allow for extra coolant. The R35 unit roughly doubles system coolant volume, and the Skyline applications also increase capacity over OEM. Fill and bleed the system properly to purge air pockets.
Radiator cap not included. KOYORAD radiators ship without a cap because pressure ratings vary by application. The OEM cap fits the KOYORAD filler neck; the KOYORAD SK-C13 1.3 Bar cap is available as an alternative.
Optional temperature sensor port. The 1/8" NPT accessory port ships plugged and accepts a standard 1/8" NPT thread sensor for a gauge, data logger or tuning device.

FAQ

Which Skyline chassis codes do these KOYORAD radiators cover?

R32 (RB20DET and RB26DETT), R33 (RB25DET and RB26DETT), R34 including BNR34 GT-R (RB25DET NEO and RB26DETT), and the R35 GT-R with the VR38DETT engine.

Is modification required to fit a KOYORAD radiator?

No. These are direct-fit units that use the factory radiator position, OEM mounting points, OEM fan shroud bolts and OEM hose locations. Installation by a professional workshop is recommended.

Does the radiator come with a radiator cap?

No. KOYORAD radiators ship without a cap because pressure ratings vary by application. The OEM cap fits the KOYORAD filler neck, and the KOYORAD SK-C13 1.3 Bar cap is available separately.

What does HH-Series mean?

HH-Series is KOYORAD's premium core construction, using a 48mm core depth with high fin density. It is specified for higher-demand applications such as the RB26DETT and VR38DETT GT-R models.

Need help choosing? Contact our team at sales@chicaneaustralia.com.au.