Wehrli Duramax/Cummins AAM 11.5" Rear Differential Cover

- Aluminum Fabricated Cover - Stainless Hardware - Fill Plug - Custom Powder Coat Finish - Made in USA These Fabricated Aluminum Differential Covers for AAM 11.50 Rear Axle on Dodge / RAM and GM HD Trucks from WCFab are precision laser cut, CNC Bent, and fully TIG welded aluminum assemblies designed to replace the OEM cover. Includes a 1" Fill Port (with 5/8" Allen Plug) and all new Stainless Steel Installation hardware. Finished in your choice of custom powder coat colors. Replaces the following GM Part Numbers: 12471445, 20984339, 23445891 Replaces the following MOPAR Part Numbers: 5086904AD, 5086904AB, 5086904AC