November 24, 2015
OE end plugs are designed to prevent critical pressure loss by capping the bore, while also functioning as a spring or valve stop. Repetitive spring motion, valve impact and fluid pressure variations cause wear between the end plug and bore mating surface, allowing vital fluid to escape the circuit.
Ford 6R140 valve bodies have end plugs at the various clutch latch valve bores and the solenoid feed pressure regulator valve bore that are susceptible to this wear. When pressure drops due to plug deterioration, various shift concerns can arise and burnt clutches will result in the affected circuit. Prevent leaks and restore hydraulic integrity and normal shift operation by installing Sonnax internal O-ringed end plug kit 126740-05K.
Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.
End plug deterioration or bore wear is visually detected.