Koyo

Does the temperature climb when you push hard on track or extract extra power from the engine? Koyo, also known as Koyorad, makes aluminium radiators for car enthusiasts and motorsport teams who want to keep the engine at the right temperature. Here you’ll find racing radiators and direct replacements for a wide range of popular cars.

Japanese cooling with a focus on quality

Koyorad is a Japanese radiator manufacturer, and the name is a contraction of Koyo and radiator. The brand has many years of experience in cooling and is today a well-known name in drifting, on track and among street car enthusiasts. The radiators are made with a focus on fitment and efficient heat transfer, so they can be installed without major modifications and keep temperatures stable even when the engine is working hard.

Koyo’s key products

The aluminium racing radiators are the core of the range. They offer greater cooling capacity than many factory radiators with plastic tanks and are built to handle high heat and pressure over long periods. Many models are available in several core thicknesses, so you can choose based on how much cooling your project needs. For daily drivers and lightly modified cars, Koyo also offers radiators that fit directly in place of the original. See each product for vehicle fitment and what’s included.

Buy Koyo from us

We specialise in performance parts and know what it takes for a project to succeed. You get a wide selection, competitive prices and personal service if you have questions along the way. Find the Koyo solution for your project and take the next step towards more performance.

Frequently asked questions

Why choose an aluminium radiator?

Aluminium conducts heat well and is light. An all-aluminium radiator is also more resistant to heat and pressure than factory radiators with plastic tanks, which can crack over time.

Does a Koyo radiator fit without modifications?

Many models are designed as direct replacements for the original radiator. Thicker racing cores may require you to check clearance for the fan and other parts. Contact us if you want to be sure.