• Excess converter pressure
  • Converter shudder & TCC slip
  • Low converter pressure
  • Overheated converter
  • Damaged converter


Excess wear/clearance at the inboard converter limit valve spool leads to unwanted converter pressure loss. Debris damage at the outboard valve spool creates binding that can stick the valve in either a high or low converter pressure position.


Recover hydraulic control and renew TCC performance by installing Sonnax drop-in converter limit valve kit that features a drop-in sleeve/valve assembly to compensate for wear and excess clearance, even in worn bores.


Converter Limit Valve Kit
Part No. 126740-25K

Fits '11-later units only.

You need this if... View Instructions Find a Distributor

In Ford 6R140 transmissions, excess wear to the converter limit valve can lead to shudder, overheating, excessive pressure, and ultimately failure. Replacing the OE valve with Sonnax converter limit valve kit 126740-25K can eliminate these issues. Drop-in Zip Valve™ parts install quickly and easily.

Learn More About Zip Valve™ Drop-In Repairs
  • Sleeve
  • Valve
  • Spring

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 6R140 Valve Body Layout

Ford 6R140 Valve Body Layout
  • 6R140 Converter Limit Valve Kit 126740-25K
  • 6R140 Converter Limit Valve Kit 126740-25K

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

6R140 Converter Limit Valve Kit Vacuum Test Locations