Description: for Yamaha RHINO 660 2004-2007(replace inlet and outlet diameter 1/4" carb only ) for Yamaha RHINO 450 2008-2009 for Yamaha RHINO 450 HUNTER 2008-2009 for Yamaha RHINO 450 SPECIAL EDITION 2008 It's Not compatible with Bigger than 10% ethanol fuel. Specification: Size: Approx 100mm*100mm*100mm/3.94''x3.94''x3.94'' Manufacturer Part Number: 5UG-13910-01-00 Inlet and Outlet Diameter:1/4" Package Includes: 1 Piece Vacuum Diaphragm Fuel Pump Note: Please check the size measurement and the picture carefully before making payment. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm)