Transmission Parts Aisin AW 450-43LE Valve Body Valve / Sleeve

Symptoms:

No 3rd & 4th
No lockup
Low line pressure
Delayed Forward
2-3 Flare

Cause:

Bore wear from continuous oscillation of the solenoid modulator valve causes shift- and converter-related problems.

Correction:

Reconditioning the bore and installing Sonnax oversized solenoid modulator valve kit to re-establish proper modulated solenoid pressure.

450-43LE

Oversized Solenoid Modulator Valve Kit
Part No. 94987-14K

This kit fits '98-later models: Isuzu NPR, GMC Forward Tiltmaster, Chevrolet Forward, Nissan UD and Mitsubishi Fuso Trucks.

Tooling:

F-94987-TL14
VB-FIX

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Aisin AW 450-43LE transmissions may exhibit multiple shift problems due to excess wear in the solenoid modulator circuit. Loss of 3rd, 4th Gear and no TCC apply are common, along with low line pressure and flare shifts. Bore wear at the inboard end results in high solenoid pressure, improper gear or harsh shifts. Sonnax oversized solenoid modulator valve kit 94987-14K allows the bore to be renewed, restoring hydraulic integrity for a properly modulated solenoid pressure.

Hardcoat anodized aluminum valve combats premature wear
Valve has added length at the outboard spool for additional support

Contents

Valve
Spring
End Plug

Valve Body Layout

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.