aFe Power 46-70152 Ford F-150 Rear Differential Cover (Machined) Constructed out of durable die-cast A380 aluminum with reinforced ribs and wrinkle black powder-coating with machined fins Built-in internal/external fins, magnetic drain plug and large oil level sight glass with calibration plug set to the factory fluid level Fits 97-15 Ford Trucks with the 12 bolt-9.75" axles; modifications may be required on 2010 and earlier vehicles Includes a fully machined groove to accept supplied O-ring 5 quart lube capacity at the factory line