Fits: Sea-Doo 587, 657, 657X, 717 Yamaha 800, 1100, 1200(all)Kawasaki 900, 1100Polaris (all)Tigershark 900, 1000.Block off kits are ONLY for carbureted applications. It is not possible to pre-mix a fuel injected ski, as the injectors will clog.