AMS 4g63 Cam Gear Alignment Tool The AMS 4g63 Cam Gear alignment tool was designed to lock your cam gears in place while performing a timing belt replacement. You’ll no longer need to use zip ties, c-clamps or vice grips trying to keep everything in line. Features * Keeps cam gears aligned for a smooth timing belt install * 6061 Aluminum for durability * Anodized Finish Applications * All 4G63 Engines Part Number: AMSCGATEVO89