6R80 lead frame (926-149) service kit with filter, pan gasket, case connector and seal, for Ford F-150, Mustang, Expedition and Transit shift faults.
If your F-150, Mustang, Expedition, Navigator or Transit suddenly starts in fifth gear, shows a dead speedometer, downshifts hard to first at speed, or throws P0717 or P0720 and drops into limp mode, the 6R80 molded lead frame is the first suspect. This kit gives you everything that comes apart during that repair in one box: a replacement lead frame for OE 926-149 and AL3Z-7G276-A, -B and -D, a filter with pan gasket (FT-188, BL3Z-7A098-A), the valve body case connector (6L2Z-7G276-AA) and the valve body seal (AL3Z-7F401-A).
The lead frame is a molded plastic plate bolted to the bottom of the valve body. Copper traces inside it carry the controller's signals out to the shift and pressure solenoids, and it carries the turbine speed sensor, the output speed sensor and, on many years, the range sensor. Heat cycles crack the traces and loosen the sensor connections, so the signal drops out intermittently. When the output speed reading vanishes, the controller thinks the vehicle has stopped. That is why Ford's bulletins describe both a start in high gear with the speedometer reading zero and an unexpected downshift toward first while moving.
Run the VIN for open campaigns first. Ford covered this exact failure through several recalls on 2011 to 2017 F-150s and on 2012 Expedition, Mustang and Navigator models, and Customer Satisfaction Program 19N01 extended lead frame coverage to 10 years or 150,000 miles on 2011-2013 F-150 and 2012-2013 Expedition and Navigator builds. If the coverage has expired, watch the turbine and output speed values on a scan tool during a drive; a reading that drops to zero while the vehicle is clearly moving points at the lead frame, not the clutches. Our F-150 6R80 shift problems guide and Expedition shift diagnosis guide cover the full test sequence.
The listing covers 2010-2020 F-150, 2011-2017 Mustang, 2012-2017 Expedition and Navigator, and 2015-2019 Transit 150, 250 and 350 with the 6R80. It also names 2017-2020 F-250 and F-350 Super Duty; most Super Duty trucks use the larger 6R140, so read the tag on your case before ordering for one. Ford's lead frame part number changed several times over the 6R80's run, which is why this kit lists the -A, -B and -D suffixes, so match the part number on your old lead frame or send us your year and VIN. See every 6R80 part in the 6R80 parts collection.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
That symptom is the classic lead frame output speed signal failure described in Ford TSB 13-6-8. Check for an open recall or the 19N01 coverage first, then replace the lead frame if the vehicle is out of coverage.
No. The pan, filter and valve body come out from underneath with the transmission in the vehicle.
Yes, the solenoids move to the new lead frame. On 2011 and later units confirm the solenoid strategy codes are programmed into the controller if anything is replaced.
The listing names 2017-2020 F-250 and F-350, but most Super Duty trucks use the 6R140. Confirm the tag reads 6R80 or send us your VIN.
MERCON LV. Expect to need roughly 5 to 8 quarts with the pan, filter and valve body removed, then set the level hot.
The connector passes through the case to the lead frame, and its O-rings are a common leak point. Replacing it while the valve body is out avoids a second pan drop.
