aFe Power 46-70010 Dodge and GM Diesel Rear Differential Cover (Raw; Street Series) Has about a 5 quart lube capacity at the factory line, factory cover holds about 4 quarts Constructed out of durable A380 die-cast aluminum with reinforced ribs Built in internal and external fins, magnetic drain plug and a 1/8" NPT plug set to the factory fluid level Fits AAM 11.50-14 Bolt Axles Oil level sight glass (Part Number:46-00001) or deep reach magnetic fill plug (Part Number:46-00002) also available