Symptoms:

  • Code 628, 741, 744
  • TCC cycling
  • Overheating & reduced lube feed
  • Delayed engagement
  • Overheated converter
  • Blued converter
  • TCC surge
  • 4th Slip
  • Coastdown Neutral
  • No 4th

Cause:

Bore wear caused by excessive spring rate and side loading will result in valve sticking and loss of balance in oil pressure.

Correction:

This oversized converter regulator valve kit repairs the bore and is an improvement over OEM design. The spring and side load have been reduced and the balance circuit is improved.

4F50N, AX4N, AX4S, AXODE

Oversized Converter Regulator Valve Kit
Part No. 96201-23K


View Instructions Find a Distributor
  • The 96201-23K kit replaces both the original 4-spooled converter regulator valve and the original 2-spooled version.
  • Valve is manufactured from hardcoat anodized aluminum and incorporates four valve spools to provide better stability and prevent bore wear.
  • Annular grooves have also been added to center the valve in the bore and prevent side loading that leads to bore wear.
  • Two replacement springs are included to compensate for the oversized valve, to reduce the excessive spring force that accelerates bore wear, and to work with either the original 2- or 4-spooled OE design.
  • Either [96201-TL3] or F-96201-TL23 can be used to enlarge the bore to accept the oversized valves, for all applications.

Reamer kit 96201-TL3 is no longer in production but may be available from distributor inventory.

  • Valve
  • Inner Valve Body Clip
  • White Spring 2-Spool OE Application
  • Black Spring 4-Spool OE Application

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.

Ford AX4N/4F50N Valve Body Layout

Ford AX4N/4F50N Valve Body Layout
  • 4F50N, AX4N, AX4S, AXODE Oversized Converter Regulator Valve Kit 96201-23K
  • 4F50N, AX4N, AX4S, AXODE Oversized Converter Regulator Valve Kit 96201-23K
  • 4F50N, AX4N, AX4S, AXODE Oversized Converter Regulator Valve Kit 96201-23K