Empire Performance upgraded the Ford 6.0L and 6.4L push rod to a one-piece design to simplify the factory two-piece while keeping it as a true drop-in replacement with no other alterations needed to be done to the head gasket for clearance. Empire Performance increased the wall from factory specs for added strength as well. This is a great economical way to help strengthen your 6.0L/6.4L when replacing head gaskets. (563-588-2708/www.empiredieselperformance.com)