Koyo leads the radiator industry in quality, performance, fitment, and extensive list of vehicle applications. Our quality begins with the careful testing in our R&D department, then to the manufacturing in Koyoâ€™s privately owned ISO 9001 certified factories, and finally to our class leading packaging. This process assures that each Koyo OE aftermarket replacement radiator arrives safely and performs perfectly in the hands of the shop and end user. Our engineers carefully design our radiators offering a true plug and play installation: No drilling, cutting, relocating, or stretching to get our radiators to fit properly. When you buy a Koyo radiator, you will receive a component that has been engineered to the highest standards.