The end plugs at the kick downshift control, manual low, and throttle downshift control valves become loose. This allows solenoid feed oil to exhaust and drop below 40-45 psi, which prevents the shift valves from stroking fully. Sonnax O-ringed end plug and checkball kit S56741-6K contains O-ringed end plugs for these three locations, which positively seal the circuit to prevent oil loss. O-Ringed end plugs positively seal the circuit to prevent oil loss; End plugs have threaded ends for ease of installation and removal; Kit contains 4 Torlon® checkballs to replace lost or damaged originals; Kit contains 4 L-shaped retainer pins to replace lost originals; Drop-in Zip Valve™ parts install quickly and easily
End Plug Kit; Kickdown Control, Manual Low, Throttle Downshift Plugs
