Mishimoto MMTS-CHV-01DL 174 and 180 Degrees Racing Thermostat with 6.6L Duramax Engine for Chevy Duramax 2500<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Fits 2001–2013 Chevrolet/GMC 6.6L Duramax</li><li>Activates at lower temperature so coolant flows through system earlier</li><li>Allows for cooler engine temperatures</li><li>Purchase Includes: One 174° F Thermostat / One 180° F Thermostat</li><li>Mishimoto Lifetime Warranty</li><li>Activate at a lower temperature than the OEM thermostats</li><li>Perfect for Duramax owners who live in warmer climates， or use their trucks under heavy load or strenuous driving conditions</li><li>Allow for cooler temperatures</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41eKKD2V2dL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41zpcbaW2dL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/418tegiK4OL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/418OjMLdtyL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41qxKEFfKML.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/4128oblQN1L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41AEL89zxAL.jpg" noproxy>