For Use On Chrysler 8.25 in. Rear Axles. Fully Machined Seal Surface For A Leak Free Installation. Heat Treated And Shot Peened To Help Handle A Direct Impact. Reinforcing Ribs For Added Rigidity And Strength. Black Powder Coat Finish. Cast From Lightweight Aluminum To Dissipate Heat. ReinForcing ribs for added rigidity and strength Heat treated and shot peened to help aandle a direct impact MODEL NO - 402029ALB