aFe Power 46-70152-WL Rear Differential Cover (Machined, with Gear Oil) 5 quart lube capacity at the factory line Constructed out of durable A380 die-cast aluminum Reinforcing ribs and wrinkle black powder-coating with machined fins Fits Ford 9.75-12 Bolt Axles Includes 6 quarts of our fully synthetic 75W-90 gear oil which exceeds API GL-5 Specs