Worn-out accumulator piston bores in listed Aisin AW 6-speed units allow pressurized transmission fluid to leak past the accumulator piston to the sump. These leaks can result in a flare at upshift, delayed engagement, poor line rise or clutch failure. The Sonnax accumulator piston kit 39741-42K will restore a worn accumulator bore and correct leakage problems.
|OE Springs||Sonnax Springs|
|Paint Color||Dimensions||Paint Color||Dimensions|
|Yellow||O.D.= .618" (15.7mm)||Yellow||O.D.= .520" (13.21mm)|
|Wire Dia. = .078" (1.98mm)||Wire Dia. = .068" (1.73mm)|
|Yellow||O.D.= .412" (10.46mm)||Yellow||O.D.= .345" (8.76mm)|
|Wire Dia. = .054" (1.37mm)||Wire Dia. = .047" (1.19mm)|
|No Paint||O.D.= .632" (16.05mm)||No Paint||O.D.= .523" (13.28mm)|
|Wire Dia. = .083" (2.11mm)||Wire Dia. = .070"(1.78mm)|
|Gray/Blue||O.D.= .429" (10.90mm)||Gray/Blue||O.D.= .336" (8.53mm)|
|Wire Dia. = .063" (1.60mm)||Wire Dia. = .051" (1.30mm)|
This kit can be modified to fit other variations of the AW 6-speed applications by modifying the sleeve length. Can be used in 5 locations.
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.
The accumulator bore and piston wear is severe enough that Sonnax accumulator piston kit [15741-14K] will not function in the worn bore.