Vertex PWC Injector Throttle Body O-Ring KitFactory fuel injection system seals can be damaged during engine rebuilds and can also degrade over time. This can lead to decreased performance, vacuum leaks and fire hazards. These kits include every O ring, gasket and seal you need to keep your machine running like new! Often not available separately from OEM fuel injectors, our kits include all O rings, gaskets and seals needed for your fuel injector and throttle body systems. Worn O rings and