6R140 Sprag Clutch 2015, new and ready to install. Fits the 6R140. Ships fast from the USA.
This listing is filed under sprag, but what ships is a full set of high energy friction plates for the late-design Ford 6R140, BorgWarner kit 35725KIT. It is built for 6.7L Power Stroke diesel units with a build date of April 2014 or later, which is the transmission in most 2015-and-up F-250, F-350, F-450 and F-550 Super Duty trucks. If your TorqShift slips in one gear, flares on an upshift while towing, or dropped a pan full of burnt lining, these are the frictions you put back in during the overhaul. The 6R140 low one-way clutch is a different part and is not in this box.
The 6R140 is a clutch-to-clutch six-speed. ATSG names its five packs by the gears they work in: forward (1-2-3-4), direct (3-5-R), intermediate (2-6), overdrive (4-5-6) and low/reverse (1-R). Each gear holds two of them applied, and every shift releases one pack while the computer applies another. When the lining on one pack glazes or burns, that handoff turns into a flare or a slip, and the heat it makes cooks the rest of the fluid. This set replaces the lining in all five packs: seven overdrive frictions (5.73 in. OD, 0.080 in.), five forward frictions (8.125 in. OD, 0.063 in.), five low/reverse frictions (96 teeth, 8.75 in. OD, 0.067 in.) and eleven 8.53 in. OD, 0.064 in. plates the kit sheet lists in two direct-clutch groups of five and six. That is 28 frictions, and BorgWarner notes gas units use fewer plates.
Do not order frictions on a symptom alone. GEARS Magazine points out that speed sensor and internal harness faults are common on this unit and can set codes on a transmission with healthy clutches, and that debris can hang the 1-2-3-4 control valve and cause neutral-on-stop complaints with no internal damage. Check those first with our 6R140 speed sensor guide. If the slip lines up with one shift, the 6R140 3-4 clutch failure guide walks through which pack is involved. Burnt lining in the pan is the clearest sign a rebuild is due.
This set is for the diesel 6R140 built from April 2014 on. Go by the build date on the door-jamb sticker, not the model year, because the plate design changed mid-production. A unit built before April 2014 needs the earlier set, and gas engine units use a different plate count. If you are not sure which version you have, send us the year and VIN, or browse the 6R140 parts collection.
For a full rebuild checklist, read our 6R140 rebuilder's guide.
| Fits | 6R140 2015 |
| Part type | Sprag Clutch |
| 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.
No. It is BorgWarner kit 35725KIT, a 28-piece high energy friction plate set for the diesel 6R140. The low one-way clutch is a separate part.
Not if the truck was built before April 2014. Early units use different plates. Check the build date on the door-jamb sticker or send us the VIN.
It is listed for diesel applications. Gas 6R140 units use fewer plates, so a diesel set will not stack correctly without changes.
No, frictions only. Reuse steels that are flat and free of heat marks, or replace them, and set every pack clearance with selective snap rings.
Mercon LV, the fluid Ford specifies for the 6R140. Soak the new frictions in it before assembly and set the level hot.
