Complete seal, gasket and o-ring overhaul set for the Ford 6R140 TorqShift, with the bonded piston set already included for a 2011-up rebuild.
If your 2011-or-newer F-250, F-350, F-450 or F-550 has a 6R140 that is coming apart for clutches, a pump or a burnt pack, every seal in it should be replaced at the same time. This TransTec 81001022 overhaul kit is the sealing side of that job: metal-clad seals, pan and valve body gaskets, O-rings, lip seals and the Teflon sealing ring set, packed with the 49125377 bonded piston set that most seal kits leave out. It suits the 6.7L Power Stroke and the 6.2L and 6.8L gas engines listed for this transmission.
The 6R140 makes six speeds with five clutch packs, and each pack is applied by oil pushing a piston. That oil only does its job if it stays in the circuit. The Teflon rings seal fluid as it passes from the stationary support into rotating drums, the O-rings and gaskets seal the case and valve body passages, and the piston seals hold the apply chamber. The bonded pistons have the sealing lip molded to the piston itself, so there is no loose lip seal to roll or pinch during assembly. Freudenberg-NOK, the company behind the TransTec brand, makes its bonded pistons in the same New Hampshire plant that supplies OE manufacturers.
Check the cheap causes first. Sonnax describes 6R140 trucks with no engagement cold that traced to a loose filter neck seal, and a low fluid level gives the same complaint. Verify the level at operating temperature, read codes, and put a gauge on line pressure. Our 6R140 delayed engagement guide covers those steps, and the 6R140 slipping guide explains how to tell a pressure leak from worn frictions. If the unit is coming apart anyway, this kit should go in.
The kit is listed for 2011-and-later 6R140 and 6R140W TorqShift transmissions in Ford Super Duty trucks with the 6.7L diesel or the 6.2L and 6.8L gas engines. The 6R140 also went into F-53 and F-59 chassis. Ford made running changes over the years, so compare the gaskets and pistons with the parts you remove, and check the identification tag on the case. Send us your year and VIN and we will confirm before it ships. Our 6R140 identification guide shows where the tag is, and the full range of parts is on the 6R140 collection page.
For the wider picture, read our 6R140 problems and service guide.
| Transmission | |
| Fits | |
| Engines | |
| Kit number | |
| Piston set | |
| Includes | |
| Brand | |
| Shipping weight |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. It is the sealing kit: metal-clad seals, gaskets, O-rings, lip seals, the Teflon sealing ring set and bonded pistons. Frictions, steels and the filter are bought separately.
It is listed for 2011-and-later 6R140 and 6R140W transmissions in F-250 through F-550 Super Duty trucks with the 6.7L Power Stroke or the 6.2L and 6.8L gas engines. Send us your VIN to confirm.
The sealing lip is molded to the piston, so there is no separate lip seal to roll or cut on assembly, and you replace the age-hardened rubber that causes slow clutch apply.
Yes. Teflon rings must be expanded to install and then sized back down so the drum slides over them without cutting them. A ring expander and resizer kit is the correct tool.
Motorcraft Mercon LV. Fill to the correct level at operating temperature and reset the transmission adaptive data after the rebuild.
