Atlantis A2520 Flush Kit for JetSki and Ultra 150 Models Flush Kit for Removal of Harmful Deposits Left in your Engine and Cooling system Allows you to use a Garden Hose for the Flush Process Quick flushing with Easy to Use Instructions included Compatible with: 1989-91 Jet Skis: TS, SC, 650SX, X2, Jet Mate and ALL Ultra 150 Models