Billet Performance Products timing belt guide replaces the flimsy factory guide on Subaru EJ20 and EJ25 engines with a stronger billet alternative. It is designed with extra length to help reduce the chance of the timing belt skipping teeth, which makes it a sensible upgrade on performance Subarus that see higher rpm, harder use or fresh engine assembly. In a workshop, it is the type of detail part you install while the timing side is apart because the cost of belt control problems is far higher than the cost of doing it properly. For street, rally, time attack and track EJ builds, it adds strength where the OE guide is often considered a weak point. FEATURES MPN: BPP1201 Engine fitment: Subaru EJ20 and EJ25 Construction: Billet timing belt guide Design: Extended length to reduce the chance of belt skip Included hardware: M8 stainless steel bolts Purpose: Replaces the factory guide with a stronger part TYPICAL APPLICATIONS Subaru timing belt service and engine rebuilds Performance EJ20 and EJ25 street builds Track, rally and time attack Subaru projects Engines where added timing system reliability is a priority FITMENT NOTES Designed for Subaru EJ20 and EJ25 timing systems Install during timing belt service or engine assembly for best access Always inspect belt, idlers, tensioner and timing components at the same time Correct clearance to the timing belt must be checked during installation