Koyo (Koyorad) all-aluminium performance radiator
Koyorad

Koyo (Koyorad) Performance Radiator: Mazda 3 BK / Ford Focus XR5 Turbo MT 2003-2011

$749.00

or 4 interest-free payments of $187.25 with Afterpay

Part no. KH061816

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Koyo Performance Radiator – Mazda 3 / Axela BK 2003–2009 & Ford Focus XR5 Turbo 2006–2011 MT

Application: Mazda 3 / Axela BK (2003–2009) & Ford Focus XR5 Turbo LS/LT/LV (2006–2011) | 2.3L Aspirated & 2.5L Turbo Petrol FWD | Manual Transmission Only

Part Number: KH061816 / KS061816 / KHXR5ST

The BK Mazda 3 is a sharp, driver-focused platform — and the MPS variant takes that further with a 190kW turbocharged 2.3L that puts serious heat through the cooling system. The Ford Focus XR5 Turbo shares the same platform DNA, with a 166kW 2.5L five-cylinder turbo that demands equally capable cooling.

Koyorad's all-aluminium replacement is a direct bolt-in upgrade for both applications, engineered to the same factory fit and mounting points as the OE unit. Nocolok 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: KH061816 / KS061816
  • Core Thickness: 25mm
  • Core Dimensions (H × W): 670 × 368/388mm
  • Tube Pitch: 35/35 × 390mm
  • Inlet / Outlet Diameter: Ø34mm (top & bottom)
  • Construction: All Aluminium, Nocolok Brazed, Heliarc Welded
  • Transmission: Manual (MT) Only
  • Fan Shroud: Retains OEM mounts
  • Hoses: Compatible with stock radiator hoses
  • Fitment: Direct bolt-in, no modifications required

Cross Reference

  • Koyorad: KH061816 / KS061816
  • Mazda OEM: Z602 15 200B / Z602 15 200C / Z603 15 200 / L33X 15 200
  • Other Suppliers: KHXR5ST

Fitment

  • Year · Make · Model · Chassis · Submodel
  • 2006–2009 · Mazda · 3 · BK (4D Hatch) · MPS – L3VDT 2.3L Turbo Petrol FWD (190kW)
  • 2003–2009 · Mazda · 3 · BK (4D Hatch) · SP23 – L3 2.3L Aspirated Petrol FWD (115kW)
  • 2003–2009 · Mazda · 3 · BK (4D Sedan) · SP23 – L3 2.3L Aspirated Petrol FWD (115kW)
  • 2006–2008 · Ford · Focus · LS (4D Hatch) · XR5 Turbo – B5254T 2.5L Turbo Petrol FWD (166kW)
  • 2007–2008 · Ford · Focus · LT (4D Hatch) · XR5 Turbo – B5254T 2.5L Turbo Petrol FWD (166kW)
  • 2008–2011 · Ford · Focus · LV (4D Hatch) · XR5 Turbo – B5254T3 2.5L Turbo Petrol FWD (166kW)

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

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