Zirgos temperature controlled cooling fan kits allow you to set the temperature at the degree you want the cooling power of your Zirgo fan to kick in, This is perfect for engines with an optimal operating temperature greater than 180 degrees, The adjustable temperature control allows you to set the activation temperature from 180 degrees to 240 degrees, All Zirgo accessories are Made in the USA and come with a limited LIFETIME WARRANTY, SKU: DSD445611