*New SBT Casting, Standard Bore, Sleeved Crankcase for Sea-doo 4-Tec.
*These casings will work for the 2002-2005 Sea-Doo 4-Tecs with the additional purchase of an SBT Rocker Arm Shaft: 702SB126.
*This replaces the check valve function in the 2002-2005 cases.