Dodge A727 (42RE/RH), A518 (46RE/RH), A618 (47RE/RH) Steel (No Stick) Throttle Valve & Plunger The Steel Series Problem Solver replaces the stock aluminum plunger valve which is prone to wear on the end at the throttle cam linkage. This wear causes a loss of throttle pressure control. The main throttle control valve is included to replace the OE aluminum valve that scars and sticks. An added cleaning groove helps keep this valve moving free. This throttle valve & plunger addresses the loss of throttle pressure control and top end boost.