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How to Replace the Radiator on a Mazda MX-5

Model: Mazda Mx 5 NC, MK 3 - Years: 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
Part: Radiator

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Video tutorial

To replace the radiator on a Mazda MX-5, first unscrew the two highlighted side bolts; disconnect the radiator fan connector and the air conditioning connector. Naturally, you must first drain the radiator by going under the vehicle and opening the lower radiator cap. Collect the fluid in a container, which you will then dispose of at an authorised centre.

It is not water. Move the clip on the lower radiator hose so that you can slide it off. Remove the upper radiator hose, also moving the clip at the end of the hose.

Move the clip attached to the thermostat so that you can shift this hose for better access. Disconnect the small pipe that goes to the expansion tank - which needs to be drained - and remove the bolts seen earlier.

With a bit of force, as it is still attached to some pins, pull it up. Reinsert the radiator into the engine bay, ensuring to centre the two brackets it rests on. Connect the lower and upper hoses, remembering the clips we moved, including the one on the thermostat.

Reconnect the small pipe going to the expansion tank, replace the connectors and fixing bolts.

Close the lower cap and fill with antifreeze.


Updated on 7 June 2026 by ScegliAuto


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