Our new rear differential cover brings performance engineering to the protection of your truck's rear-end. This differential cover has a 5 Quart lube capacity at the factory line, a magnetic drain plug, a magnetic tipped fill plug for maximum protection. Built-in internal and external fins transfer heat from the fluid to the outside air for maximum cooling. aFe has also designed a large oil level sight glass with calibration plug set to the factory fluid level to eliminate overfilling. This differential cover is constructed out of durable die-cast A380 aluminum with reinforced ribs and a wrinkle black powder coating for maximum strength and styling. This cover fits the Dana 80 axles. This cover uses an O-ring for a leak-free seal. When it comes to engineering for power, performance, protection and value, aFe Power is the only choice. Some of our differential covers feature cooling fins or other design elements to dissipate heat effectively, helping to maintain optimal operating temperatures and prolonging the life of the differential.