SonnaxSecondary Modulator Accumulator Piston Kit

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 S39741HK 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

Secondary Modulator Accumulator Piston Kit; 2 Locations