Heavy Duty PPE Differential Cover cast from A356-T6 aluminum alloy. Cast aluminum finish and greater surface area optimize heat transfer. Prolongs life of rear differential gears by reducing oil temperature. Robust side ribs provide additional strength. Fluid capacity increased to 8 quarts. Includes 3/8” NPT stainless steel drain plug and 1” sight level / fill plug with a powerful Neodymium magnet to attract & hold harmful ferrous metals. Easy installation with included fasteners.