Koyo (Koyorad) KH020442 radiator – Nissan Skyline R33 RB25DET/RB26DETT
Koyorad

Koyo (Koyorad) Performance Radiator: Nissan Skyline R33 RB25DET / RB26DETT MT 1993-1999

$699.00

or 4 interest-free payments of $174.75 with Afterpay

Part no. HH020442

1

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Koyo Performance Radiator – Nissan Skyline R33 RB25DET / RB26DETT MT 1993–1999

Application: Nissan Skyline | E-HCR33 (GTS25-T) & E-BCNR33 (GT-R) | RB25DET & RB26DETT Turbo Petrol RWD | Manual Transmission

Part Number: HH020442 / KH020442

⚠️ Note: This radiator does NOT fit the Nissan Skyline R34 GT-R (BNR34). Please ensure you select the correct part for your chassis.

The R33 Skyline is a genuine icon — whether it's the GTS25-T with its RB25DET or the legendary GT-R with the RB26DETT twin-turbo inline-six. Both engines generate serious heat under hard driving, and the factory cooling system has its limits when you're pushing boost on track or in spirited street use.

Koyorad's all-aluminium radiator is a direct bolt-in performance upgrade for the R33, engineered to the same factory fit and mounting points as the OE unit. Nocolok furnace brazed, precision TIG welded by hand, and triple pressure tested — it retains all OEM fan shroud mounts and stock hose connections with no modifications required.

Why Koyorad?

  • 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 — Application-specific mounting points for fan shrouds, inlet/outlet hoses, and top/bottom pins ensure a pain-free, no-modification install.
  • Hand-Crafted Heliarc Welds — Each radiator is individually Heliarc welded by hand, creating the strongest possible aluminium-to-aluminium bond across all components.

Specifications

  • 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

Cross Reference

  • Koyorad: HH020442 / KH020442
  • Nissan OEM: 21410 15U00

Fitment

  • Year · Make · Model · Chassis · Submodel
  • 1993–1998 · Nissan · Skyline · E-HCR33 (4D Sedan / 2D Coupe) · GTS25-T – RB25DET 2.5L Turbo Petrol RWD
  • 1995–1999 · Nissan · Skyline · E-BCNR33 (2D Coupe) · GT-R – RB26DETT 2.6L Twin Turbo Petrol AWD (206kW)

❌ Does NOT fit: Nissan Skyline R34 GT-R (BNR34). A separate Koyorad part number is required for the R34 GT-R.

Sold individually. Manual transmission fitment only. Lead times may apply — contact us for availability and shipping estimates.

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