What is the labor on changing valve cover gaskets 2003 jeep liberty 3.7L on 2003 Jeep Liberty

Have oil leaking down the back of the motor dripping on exhaust. Shop said it was the valve covers.

Asked by for the 2003 Jeep Liberty
Left side is 0.9 and right side is 1.8 Both 2.5 hours or you can see a parts and labor estimate here