2013 Ford Edge - Less expensive alternative?

ford

#1

My 2013 Ford Edge Sport 4x4 PTU leak and RDU need replacement at 120000 miles. Cost to fix 4000 dealer cost


#2

PTU? RDU? Please explain. If these are involved w/the AWD operation, I think there’s been been some complaints from other owners, suggest to google to get more info.