Roger Clark Timing Belt Kit No Belt IncludedYour timing belt and the components it relies on to keep tension are vital to the running of the engine. Should just one component fail or your timing belt snap then the consequences for your engine could be disastrous resulting in great expense to repair. This is perhaps even more applicable to Subaru's as the vehicles are generally driven harder and a greater demand is placed on the engine, therefore its important to choose your components wisely