MX-5 Radiators

Is your stock radiator looking brown or green? Or is it simply no longer cutting the mustard when you’re on track? Either way, you’ll find exactly what your car needs below, ranging from like-for-like standard replacements to significant upgrades. Our MX-5 aluminium radiators are a go-to bolt on part; they fit directly into the place of the OEM rad yet have a higher coolant capacity, better cooling efficiency and look the part. Find them and other radiator options in amongst our full range of MX-5 radiators below, or view all of our MX-5 parts online.

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With the earliest MX-5s, Miatas and Roadsters now well over 30 years old, it’s safe to say that their radiators have seen better days. Fortunately, our extensive line-up of replacement and upgrade options means it’s easier than ever before to ditch that crusty old rad for a shiny new one!

No matter your reason for making the switch – whether it’s to improve the look of your engine bay, to keep your temps down on track or simply as a preventative measure – you’ll find plenty of options to choose from in our MX-5 performance part selection. Our range includes upgrade parts from top brands like Koyorad, CSF, Mishimoto and Japspeed, as well as aftermarket replacement rads from the likes of Denso.

Frequently Asked Questions

How do I know when it’s time to replace my radiator?
From the factory, OEM Mazda MX-5 radiators had glossy black plastic headers and clean, unclogged pipes. Over time, and thousands of heat cycles, this plastic turns a stodgy brown/green colour, indicating that the plastic header has become brittle. If yours looks like this, its days are numbered. The cooling system’s pressure builds as the temperature does, so if you’re throwing it around a track or even going for a spirited B-road drive, the pressure may build to the point where the plastic cracks or, worst-case scenario, the header explodes.

Will I need an MX-5 performance radiator for my forced induction build?
When you add boost, either by turbocharging or supercharging your MX-5, an upgraded MX-5 radiator is always recommended. Even on the road, the OEM radiator won’t be able to cope with the heat output of a boosted engine, and you’ll begin to experience overheating, potentially damaging your engine.

How easy is it to install an MX-5 radiator upgrade?
If you’re reasonably handy with a socket set and other basic tools, you shouldn’t have too much of an issue swapping your stock rad out for an upgraded item: the new one simply bolts into the same mounting position as the original. Just make sure that you’ve bled the cooling system correctly before going out for a drive.