Supreme Mazda RX7 Radiator FD3S 13B Alloy - 52mmSupreme Mazda RX7 Aluminium Radiator FD 13B 52mm Thick Our full aluminium radiators will be a direct replacement for your vehicle unless stated above. Most of the time your factory fans will mount up but since these are wider than standard you might need to purchase aftermarket radiator fans which we sell! These provide a huge amount of extra cooling for your vehicle over your standard plastic radiator. High quality and high durability for standard