GM 8.5in./8.6in. 10 Bolt Ball Milled Aluminum Cover For Use On GM 8.5in. And 8.6in. Rear Axles Only;Cast From Lightweight Aluminum To Dissipate Heat;Black Powder Coated Finish;Ball Milled ReinForcing Ribs For Added Rigidity And Strength;Heat Treated And Shot Peened To Help Handle A Direct Impact;Fully Machined Seal Surface For A Leak Free Installation;Convenient Filler Plug For Easy Service;Fill Level Plug For Accurate Fill Level;Drain Plug For Mess Free Service;Easy To Use Dipstick For Simple Maintenance with Has Drain Plug G2 Axle and Gear G2 GM 8.5 Inch/8.6 Inch 10 Bolt Ball Milled Aluminum Cover - 40-2021MB 40-2021MB Differential Covers
