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.

Salvages valve bodies with severe accumulator bore wear
O-Ring seal improves piston response
Drop-in Zip Valve™ parts install quickly and easily


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)


Learn More About Zip Valve™ Drop-In Repairs

More From This Category

Sonnax Bearing Kit, GM 6L80 Commodore VE-VF 6L80E/90

Sonnax Bearing Kit, GM 6L80 Commodore VE-VF 6L80E/90

$163.67

Motive Gear Axle Shaft, 1541 Manganese, 5x135 mm Bolt Pattern, 31.75 in. Length, 31SPL, ForD EXPEDITION 1997–2004, Each

Motive Gear Axle Shaft, 1541 Manganese, 5x135 mm Bolt Pattern, 31.75 in. Length, 31SPL, ForD EXPEDITION 1997–2004, Each

$200.31

Motive Gear Differential Pinion Bearing Kit, Koyo, For CHEVROLET BLAZER 1969–1974, Kit

Motive Gear Differential Pinion Bearing Kit, Koyo, For CHEVROLET BLAZER 1969–1974, Kit

$110.66

MANLEY Connecting Rod Pin Bushing, Bronze, .930 in. OD, .866 in. ID, 1.010 in. Length, Each

MANLEY Connecting Rod Pin Bushing, Bronze, .930 in. OD, .866 in. ID, 1.010 in. Length, Each

$22.80