PremiumQuality Replacement PartCooling Thermostat For Yamaha Models:Grizzly 400 YFM400F 2007-2008Grizzly 400 YFM400F Hunter 2007-2008Grizzly 450 YFM450F 4X4 2007-2014Grizzly 450 YFM450F EPS 4X4 2011-2014Grizzly 450 YFM450F Hunter 4X4 2007-2014Grizzly 450 YFM450F Special Edition 4X4 2008 Order Includes:1 x Thermostat | 2TV-12411-00-00 2TV-12411-01-00Width : 29.96 mm | 1.17″Height : 32.27 mm | 1.27″ Note : 70-85 Degree**