A2501 FLUSH KIT Fits: JS440, JS550, 550SX, 650SX, 750SX, 750SXI All Years, And other kawasaki jetski models with 3/8" water hose. SEADOO GT (ALL YEARS), and all other Seadoo models with 3/8" water hose. CAN BE USED AS A UNIVERSAL FLUSH KIT FOR ALL SKIS WITH 3/8 WATER LINE. ALLOWS YOU TO RUN YOUR MACHINE ON A GARDEN HOSE WITH THE QUICK DISCONNECT FITTING AND FLUSH OUT ANY HARMFUL DEPOSITS LEFT IN YOUR COOLING SYSTEM BY LAKE/ OCEAN WATER. Quick disconnect design makes it easier than ever to flush out your machine, no more water mess in your hull from screwing and un-screwing the garden hose inside the machine. This quick disconnect flush kit comes with a valve that only allows water flow through it when connect to the ski. Installs in minutes and anyone can do it with our easy to follow step by step instructions.