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:

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

Warning:

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

4F50N, AX4N, AX4S, AXODE

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

Works in 2- or 4-spooled OE applications


View Instructions Find a Distributor
  • Replaces both the original 4-spooled converter regulator valve and the original 2-spooled version
  • Hardcoat anodized aluminum valve combats premature wear
  • Annular grooves help center the valve in bore to reduce future side-load 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.

Works in 2- or 4-spooled OE applications.

  • 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

Ford AX4S, AXOD, AXODE Valve Body Layout

Ford AX4S, AXOD, AXODE 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