Cusco Aluminum Pulley Set - Subaru EJ Models (inc. 2002-2014 WRX / 2004+ STI)

Part number: 6A1 733 A. This Cusco Aluminum Pulley Set is a game - changer for your Subaru EJ engine. By reducing the rotational mass from the factory pulleys, it significantly improves engine response. The crank pulley in this kit weighs only 1.74LBS (790 g), compared to the stock's 5.07LBS (2.3kg). The alternator pulley tips the scales at 0.16LBS (76g), while the stock one is 0.66LBS (300g). With less stress on the engine, you'll enjoy better throttle response and quicker acceleration. Made from high - grade metal, these pulleys come powder - coated in Cusco's signature blue finish. This not only protects against rust and corrosion but also adds a cool look to your engine bay. Color: Blue. Warranty: Manufacturer. Material: Aluminum. Pulley Ratio: Stock.

Using this Cusco Aluminum Pulley Set is straightforward. First, make sure your engine is cool and the car is parked safely. Remove the old factory pulleys carefully using the right tools. Then, install the new pulleys from the set in their place, ensuring they fit snugly. When it comes to maintenance, check the pulleys regularly for any signs of wear or damage. Since they're powder - coated, you can clean them with a mild soap and water solution. Avoid using harsh chemicals as they may damage the coating. Also, if you notice any unusual noises or vibrations while driving, it's a good idea to have the pulleys inspected. Keep in mind that proper installation is key for the best performance, so if you're not confident, it's advisable to have a professional handle it.