• Harsh TCC apply
  • TCC slip


The OE valve springs are subject to breakage or fatigue failure, preventing proper operation of the associated valve.


Replace the broken or fatigued OE spring with the Sonnax replacement spring to restore proper spring rate.


TCC Modulator Spring
Part No. 56947J-S4

Package Quantity: 5

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The OE valve springs are subject to breakage, bending or fatigue failure. Broken portions of the spring can cause the associated valve to stick in either the fully applied or released position. A fatigued spring will not have enough force to fully stroke the valve to the released position. Complaints vary depending upon specific location, but can be seen in the chart. The Sonnax springs will restore proper function to the associated valve when replacing a broken, bent or fatigued 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 5R55N Valve Body Layout

Ford 5R55N Valve Body Layout
  • 5R55N TCC Modulator Spring 56947J-S4