Solenoid switch valves and plugs in listed Chrysler transmissions cause bore wear as they oscillate and stroke during operation. This wear allows pressure loss and cross-leakage, and often permits the plugs to cock and hang up in the bore. This can result in failsafe mode, various codes, bind-ups, and burnt 4th or overdrive clutches. In 41 and 42 series units, TCC concerns can result, including engine stalling due to improper lockup. Reconditioning the bore and installing patented Sonnax oversized solenoid switch valve kit 92835-21 restores vital clearances for renewed operation and control.

• Annular grooves help center valve in bore to prevent future side-load wear
• Hardcoat anodized aluminum valve combats premature wear