Excellent Performance: You can use this special tool to secure the camshaft during maintenance of the camshaft and timing chain. 1 Camshaft Rotation Fixing Tool. Good Compatibility: This product is a customized product, specially customized for the 2008-2012 Chrysler/Jeep 3.7L & 4.7L V6 Engines, so this product can easily help you to deal with repairs related to camshafts.