Sonnax has introduced a new drop-in TCC signal damper piston kit for Ford 10R140 transmissions. The company says users can correct circuit pressure variation in these units by replacing the worn OE damper with this kit (part no. 105740-07K). This kit includes an O-ringed sleeve and no reaming is required.
![Sonnax-105740-07K-1400](https://s32667.pcdn.co/wp-content/uploads/2024/06/Sonnax-105740-07K-1400-1000x500.jpg)