Tegiwa's alloy radiator for Mazda MX-5 NB helps keep coolant temperatures under control and also increases the capacity of your cooling system. Upgrading to an aluminium radiator noticeably increases the cooling capacity. The 50mm depth increases the volume of coolant and the surface area of the radiator considerably. Supplied with a 1.3 bar cap, you can be sure that your car is ready for the track and stop overheating. Specification 320x653x50mm 1.3 bar radiator cap included Direct replacement for the OEM radiator Please note the aluminium drain bung should only be tightened by hand to finger tight as the bung seals with an o-ring.