NOTE: For 2003-2005 - can only be used with an updated shaft. Do NOT use with OEM 2003-2005 shaft. These brand new supercharger washers are the upgraded steel type (the OEM upgraded from ceramic to steel in 2008). These washers have been tested hundreds of hours on the water to insure the highest quality parts go into your skis. 2003-2007 super charger washers have 2 different inside diameters. 2008 and up have the larger diameter washers.