A2520 FLUSH KIT COMES WITH INSTRUCTIONS, EASY TO INSTALL FITS '89-'91 Jet Skis: TS, SC, 650SX, X2, JET MATE All Year Ultra 150 ALLOWS YOU TO RUN YOUR MACHINE ON A GARDEN HOSE AND FLUSH OUT ANY HARMFUL DEPOSITS LEFT IN YOUR COOLING SYSTEM BY LAKE/ OCEAN WATER Installs in minutes and anyone can do it with our easy to follow step by step instructions.