http://www.ringpinion.com/DiffList.aspx?SearchMode=Make&MakeID=2&ModelID=253&Side=Rear&DriveType=RWD
Go to this site and you'll find the info & help you need!
RepairPal Certified shops can diagnose and repair your 2002 Ford F-150. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.