Labor time is around 4 hours +/- 1/2 hour. Hourly rates differ depending on where you are. In my neck of the woods the going rate at a dealer would be around $80/hr. Remember one thing though. Certified mechanic and MB tech can make a difference. Experience counts! I can do that job in two hours blindfolded but someone with less experience ( but by no means a lesser mechanic ) may take much longer. You get what you pay for. Good luck