The Koyorad JR2146J radiator steps in when the Hiace KDH starts running hot on long climbs or in stop start traffic. The core stands at 350 mm high and 289 mm wide so it fits the standard support panel without tricky mods. The 25 mm thick core and 31 mm inlet and outlet suit the 2.5L and 3.0L turbo diesel engines that rack up big kilometres hauling tools or gear. This radiator brings an integrated transmission cooler so an auto Hiace can tackle hills and highway runs without extra plumbing. The tube and fin layout across the 350 mm by 289 mm face keeps air moving through even with a bull bar or light bar out front. The 31 mm hose connections match the factory gear which makes this a smart buy when you want parts that just line up and work in Aussie heat.

• Suits Toyota Hiace KDH 2005-on models
• Compatible with 2.5L and 3.0L turbo diesel engines
• Core height measures 350 mm for correct fit
• Core width measures 289 mm for Hiace bay
• Core thickness of 25 mm balances cooling and flow
• 31 mm inlet diameter matches factory hose
• 31 mm outlet diameter matches factory hose
• Integrated transmission cooler for automatic gearboxes
• Purpose-built for Hiace with auxiliary cooler setup
• Ideal replacement radiator for work and touring vans

Q: Does this radiator suit both 2.5L and 3.0L turbo diesel Hiace KDH models?

Yes, it suits both 2.5L and 3.0L turbo diesel Toyota Hiace KDH models from 2005-on. That means fleets or owners running mixed engine years can standardise on one radiator code. Just match your vehicle as a KDH turbo diesel variant. Always compare your old core height and hose diameters before bolting it in.

Q: Is there a built-in transmission cooler in this radiator?

Yes, this radiator includes an integrated transmission cooler section. That cooler handles the automatic transmission fluid that would otherwise need a separate auxiliary cooler. Using the built-in cooler keeps the install neat and reduces extra plumbing. Always reconnect the transmission lines carefully and refill with the correct fluid.

Q: What are the core dimensions of this Koyorad radiator?

The core height is 350 mm, the width is 289 mm and the thickness is 25 mm. These dimensions match the Hiace KDH cooling package and help keep airflow efficient. Measuring your old radiator before ordering is still a smart move. Small differences can point to a non-standard or modified setup.

Q: What hose size do the inlet and outlet connections use?

Both the inlet and outlet tubes use a 31 mm outside diameter. That size matches the standard Hiace KDH upper and lower radiator hoses. Reusing your existing hoses is usually fine if they are in good condition. Replacing tired hoses at the same time can save downtime later on.

Suits Toyota Hiace KDH models from 2005-on fitted with 2.5L or 3.0L turbo diesel engines and an auxiliary transmission cooler. Fitment requires removal of the original radiator and transfer of factory hoses, mounts and shroud where applicable. Installation should follow Toyota Hiace KDH cooling system service procedures including correct coolant specification and bleeding steps. Check core height 350 mm, width 289 mm and inlet and outlet diameter 31 mm against the original unit before installation.