Works with Sea-Doo Fuel Injection and All Yamaha 4-Stroke Fuel Injectors Fuel Injector O'Ring Kit with Compartmentalized Box 60 Large Diameter Fuel Injector O'Ring 40 Small Diameter Fuel Injector O'Ring 30 Fuel Injector Seals 70 Fuel Injector Filters 30 Fuel Injector Caps 30 Fuel Injector Washers This kit has enough pieces to do injectors for 10 Yamaha and 10 Sea-Doo engines