How much does a front cam shaft seal replacement usually cost?

Depending on what the labor cost is per hour at the shop you bring it to will very the total labor cost. To replace the Camshaft Seal is 3.2 hours on a 2.0L SOHC and 3.1 hours on a 2.4L Turbo. The seal goes for a little under $10. They may be other parts costs.