Rear Differential Cover Kit - Heavy-Duty Cast Aluminum - GM 1500 Gas-DieselSpecially engineered to minimize friction and maximize lubrication. Keep your GM rear differential running cool and clean with an upgraded cover from PPE. Made from high quality cast A356. 0 T6 aluminum for strength and optimum heat dissipation. The increased fluid capacity provides greater thermal stamina. This keeps your differential oil running cooler. The oil will keep its viscosity which helps extend differential service life. This new cover also
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