6602 Differential Deflecting Bearing Preload Wrench. 6602 Differential Bearing Preload Wrench For Chrysler/Dodge Vehicles. 【Application】6602 Differential Bearing Preload Wrench Fit for Chrysler for Dodge Vehicles with 7-1/4, 8-1/4, 8-3/4, and 9-1/4 Rear Axles.