The Subaru WRX STI Timing Belt is an important part of the engine. It helps the pistons and valves maintain synchronization to provide a powerful drive whenever you stamp on the accelerator. The Timing Belt, constructed from sturdy fiber-reinforced rubber, bends easily around the idler pulleys and the water-pump sprocket while also reducing noise and weight relative to metal chains and not needing any need for an oil bath. The specific tooth shape engages on the crankshaft and dual overhead cam gears so the turbo WRX STI motor retains razor sharp valve timing right up to redline. An automatic tensioner that is working right maintains belt tension properly such that there is no slack. If there is slack, then the Timing Belt can jump the sprocket and cause the valves to hit the pistons. This automatic tensioner helps protect your wallet and your engine's performance. Single original design fits all WRX STI models from the debut 2015 sedan through recent updates. Makes finding the right parts easy and factory fit level guaranteed with no extra hassle. With the coolant pump in tow, the WRX STI Timing Belt helps maintain operating temperatures for operation that is more efficient and cleaner. Regularly inspecting for cracks, frays, or fluid stains and scheduled replacement maintains the Subaru throttle response that drivers expect. Many owners also swap the water pump, tensioner, and idlers together so everything is fresh and makes the engine a little safer during hard launches or track days. The Timing Belt of the Subaru sports car is an interference design. Thus, having a healthy Timing Belt is not only about the speed of the vehicle. More importantly, it prevents the vehicle from stopping suddenly due to a breakage and stranding the driver. Subaru lovers all know the importance of Timing Belt service and what happens if an owner misses the service window. The genuine Subaru part meets strict factory specifications, enabling easy installation of each new Timing Belt to restore WRX STI's crisp timing accuracy. Selecting an appropriate Timing Belt demonstrates Subaru's commitment to driver confidence.
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