Valves, springs and pressurized fluid repeatedly push on end plugs causing them to deform and wear. As a result, critical pressure is lost due to excessive clearance betweeen the plug and bore. Sonnax O-ringed end plug kit S55741-6AK services the eight individual bores in the ZF6HP21/28/34 (Gen. 2) valve body which use internal end plugs to isolate valves from solenoids. The O-ringed end plugs replace damaged OE end plugs and restore pressure containment to the valve bore. Also available for this unit is the double O-ringed end plug kit 95740-30K that services all seven of the 12mm dia. bores. Prevents loss of critical pressure; Requires no machining or special tools; Services all seven bores to isolate valve from solenoids with 12mm internal end plugs; Drop-in Zip Valve™ parts install quickly and easily
End Plug Kit; With O-Ring