Wear at the solenoid modulator accumulator bores in Aisin AW TF-81 units is very common. Wear allows solenoid feed pressure to exhaust resulting in various shift complaints and/or codes. Sonnax solenoid modulator accumulator piston kit 39741-14K incorporates an O-ring for positive sealing and annular grooves for better centering and wear prevention.

Pistons incorporate an O-ring for positive sealing, even on worn bores
Annular grooves added for better piston centering and wear prevention
Anodized aluminum piston combats premature wear and eliminates thermal expansion related leakage
Drop-in Zip Valve™ parts install quickly and easily

Learn More About Zip Valve™ Drop-In Repairs

More From This Category

Motive Gear Axle Shaft, 1541 Manganese, 5x4.5 in. Bolt Pattern, 29.1875 in. Length, 28SPL, ForD AEROSTAR 1986–1997, Each

Motive Gear Axle Shaft, 1541 Manganese, 5x4.5 in. Bolt Pattern, 29.1875 in. Length, 28SPL, ForD AEROSTAR 1986–1997, Each

$200.31

Sonnax 3Rd Clutch Piston Kit, GM, 4T60-E, 4T65-E, Each

Sonnax 3Rd Clutch Piston Kit, GM, 4T60-E, 4T65-E, Each

$309.22

RTS OE Speedometer Gear, For GM, 700R4 4L60 TH350BOP, 18 Tooth Drive, Each

RTS OE Speedometer Gear, For GM, 700R4 4L60 TH350BOP, 18 Tooth Drive, Each

$51.03

Sonnax Bearing Kit, Ford, Cd4E 1992 & Up, Each

Sonnax Bearing Kit, Ford, Cd4E 1992 & Up, Each

$99.53

Sonnax Heavy Duty 4-5-6 Clutch Apply Piston Kit, GM, 6L80 Commodore VE-VF 6L80E, 6L90 Commodore VE-VF LSA Heavy Duty, Each

Sonnax Heavy Duty 4-5-6 Clutch Apply Piston Kit, GM, 6L80 Commodore VE-VF 6L80E, 6L90 Commodore VE-VF LSA Heavy Duty, Each

$253.17