6R140 Planetary, new and ready to install. Fits the 6R140. Ships fast from the USA.
A Super Duty that howls in the lower gears, loses forward and reverse together, or shows a pan full of needle bearings and bronze may have a failed front planetary. This is a new front planetary gear for the Ford 6R140 TorqShift, the six-speed automatic behind the 6.7L Power Stroke and the 6.2L and 7.3L gas engines in F-250 through F-550 trucks. At its price it is the economical way to replace the front gear set during a rebuild instead of reusing a tired one.
The 6R140 uses a Lepelletier gear train: a simple planetary at the front of the unit feeding a Ravigneaux gear set at the rear. The input shaft turns the front planetary, and its carrier sends a reduced speed back to the forward clutch and the direct (3-5-R) clutch. The forward clutch is applied in first through fourth, and the direct clutch in third, fifth and reverse, so this gear set carries torque in every range except sixth. That reduced-speed path is what lets the 6R140 build a 3.974 first gear and a 3.128 reverse, per Ford Component Sales. When the front planet fails, the truck typically loses several gears at once instead of one.
A no-move or delayed engagement on a 6R140 is far more often a pressure problem than a broken gear, so start with fluid level and line pressure. Our 6R140 delayed engagement guide covers the filter seal and pump causes, and the 6R140 pump failure guide explains the pressure checks. If pressure is good and the pan holds metal, the front gear set moves up the list. With the unit apart, look for pinions that feel rough or wobble on their shafts, heat discoloration, chipped teeth on the ring gear, and wear on the thrust surfaces.
The listing names the Ford 6R140 without a specific year range. The 6R140 has been used in 2011-and-later Super Duty pickups and chassis cabs. Ford made running changes during production, so compare the new gear against your original for tooth count, spline count, overall height and the mating thrust surfaces before installing. If anything looks different, stop and send us your year and VIN. Browse the full range of parts for this transmission on our 6R140 parts page; the rear Ravigneaux set is sold separately as our 6R140 rear planet with sun gears.
A front planet that came apart sends debris through every circuit, so most rebuilds also call for a 6R140 rebuild kit and new frictions such as a 6R140 friction clutch module.
| Fits | 6R140 |
| Part type | Planetary |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
This is the front planetary gear for the 6R140. The rear Ravigneaux set with its two sun gears is a separate part.
The listing covers the Ford 6R140 without splitting gas and diesel. Compare tooth count, splines and height against your original, or send us your year and VIN to confirm.
Replace the thrust bearings and washers on both sides, inspect the input shaft and hub splines, check the input shaft to 4-5-6 drum weld, and flush the cooler. If the old gear failed and spread debris, rebuild the clutches as well.
Yes, because both the forward and direct clutches take their input from it. Confirm fluid level and line pressure first, since a pressure loss causes the same complaint far more often.
Use Ford MERCON LV only. The 6R140 holds about 4 gallons total, and the level should be checked hot.
