THIS IS A TRANSGO FIX FOR THE DETENT BALL IN CHRYSLER VALVE BODIES.IT WILL REPLACE THE DETENT BALL WITH A STEEL BULLET TO KEEP THE MANUAL VALVE IN POSITION SO IT DOES NOT HAVE EXCESSIVE MOVEMENT. EXCESSIVE MOVEMENT OF THE MANUAL VALVE CAN CAUSE A NO START OR LATE ENGAGEMENT OF GEARS.THIS KIT WILL WORK FOR ALL DODGE A500'S AND 518'S AND ALSO 618'S.