... , 54, 57, 68, 72, 76, 83mm Wrench Sizes Fan Clutch Wrench SetRemoving fan clutch to replace water pumps or for otherengine service ... job done. Heat-treated to withstandhigh torque to remove some fan clutches. Most wrenchesfeature a 1/2 drive square for attaching ... Holding Tool 2-13/16" Fan Hub Wrench 1-7/16" Fan Clutch Nut Wrench 1-7/16" Fan Clutch Wrench 1-9/16" Fan Clutch Wrench 1 ...