EMPI Sand-Sealed Santana Polished Aluminum PulleyThis pulley is sand sealed to make sure your off road car does not suck dirt into the engine when running. It comes with the collar, seal, and necessary spacers for installation. Having proper timing is essential to making the most power out of your VW engine, as well as making it run cool and get great mileage. This high quality polished aluminum pulley is properly degreed to help you time it properly, and proved good looks at the same time.