6R100 Shift Kit, new and ready to install. Fits the 6R100. Ships fast from the USA.
If your 2017-or-newer gas Super Duty with the 6R100 has a vibration between about 28 and 46 mph that feels like an out-of-balance tire, clunks on coast-down, or has started setting gear ratio codes, the valve body's pressure regulator and converter clutch regulator are the first places to look. This is the TransGo SK 6R80-G2 shift kit, TransGo's valve body repair kit for the second-generation valve body used in the 6R80 from 2015 and the 6R100 from 2017.
The 6R100 is the heavy-duty member of Ford's 6R family, and Ford's fluid chart places it behind the 6.2L gas V8 and, for 2017-2019, the 6.8L V10 in F-250 through F-550 trucks. Its control module and solenoids sit on the valve body inside the pan, and every clutch apply and converter lockup event depends on the pressure regulator (PR) valve holding a steady line pressure. TransGo traces the common complaints to wear in the PR valve bore and its balance bushing, and to a TCC regulator valve design that lets lockup pressure wander.
The kit replaces those two valves with redesigned parts. It contains a patented drop-in, hardened steel two-piece PR valve with an aluminum boost bushing, a drop-in hardened steel TCC regulator valve, two calibration springs, four new bore plug wire retainers and six new solenoid damper rubber inserts. TransGo's valves use longer lands that ride on unworn sections of the bore, which restores the seal without reaming.
A shudder on light throttle that goes away when lockup is commanded off points at the TCC circuit; our 6R torque converter shudder guide explains how to separate a converter problem from a regulator problem. TransGo notes that if the complaint has been going on for months, the converter may need replacing too. Ratio codes with clean fluid usually point at pressure loss rather than burnt clutches; the 6R valve body wear guide covers the bores involved. Burnt fluid and friction material in the pan mean the unit needs more than a valve body kit.
This kit fits only the Gen 2 valve body: 6R80 from 2015 on and 6R100 from 2017 on, according to TransGo, and its instructions specify the non start-stop 6R100. Earlier 6R100 trucks (2011-2016) use the Gen 1 valve body and the TransGo SK 6R80-A kit instead, so this kit is not for them. Because some late 2014 and early 2015 units and some replacement Gen 1 valve bodies look like Gen 2 castings, TransGo says to measure the original PR valve before installing: about .514 in. means Gen 2 and this kit, about .495 in. means Gen 1. If you are not sure, send us your year and VIN and we will check. Other 6R100 parts are in the 6R100 collection.
| Fits | 6R100 |
| Part type | Shift Kit |
| Condition | New |
| Brand | TransGo |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. TransGo lists this kit for the 6R100 from 2017 on with the Gen 2 valve body. Earlier units take the Gen 1 kit, SK 6R80-A. Measure the PR valve to be sure: about .514 in. is Gen 2, about .495 in. is Gen 1.
That is one of the main complaints it targets, through a new TCC regulator valve. TransGo notes that a converter that has been shuddering for a long time may also need replacing.
Gear ratio codes P0729 and P0731-P0734 and shift error codes P0781-P0784 and P0829, when they come from pressure loss in the PR or TCC circuits rather than a failed clutch.
Ford's fluid chart lists Mercon LV for the 6R100. Check the level with the engine running and fluid at operating temperature.
No reaming or special tooling is required for the PR and TCC valves. High-mileage valve bodies may also need the lube and solenoid regulator bores repaired, which TransGo sells as a separate tooled kit.
On high-mileage valve bodies TransGo recommends a fresh set of solenoids along with the bore repairs. On lower-mileage units, reuse solenoids that test good and return each to its original location.
