8F35 Clutch Module 2018, new and ready to install. Fits the 8F35. Ships fast from the USA.
This is a Raybestos steel clutch plate module, part number STMFORD25, for the Ford 8F35 eight-speed transaxle from 2018 production on. If you are rebuilding the 8-speed out of a 2019-up Ford Edge, Escape, Bronco Sport, Maverick, Transit Connect, Lincoln Nautilus or Corsair because it slips, flares between gears or came apart with burnt fluid and glazed plates, this is the steel half of the clutch job. It is not a friction kit: every plate in the box is a steel separator plate.
Each rotating clutch in the 8F35 is a stack of alternating friction plates and steel plates. The frictions carry the lining; the steels are the smooth, flat surface the lining clamps against, and they soak up most of the heat generated during every shift. When a steel overheats it warps, takes on blue heat spots or gets a glazed finish, and a new friction stacked against it will chatter and wear out quickly. That is why a proper overhaul replaces both halves.
This module contains 14 steels, sorted by clutch: 2 for the A clutch, 2 for the F clutch, 2 for the C clutch, 3 for the B clutch and 5 for the E clutch. According to GEARS magazine, the A clutch applies in 1st through 5th and holds the output sun gear shell, which makes it one of the hardest-working packs in the unit. The 8F35 has no low/reverse clutch plates at all, because a selectable one-way clutch (SOWC) took that job over, so there are no steels for that position here.
On 8F35 units built on or before December 20, 2021, Ford bulletin 22-2281 traces many slipping and harsh-engagement complaints to worn output planet carrier needle bearings, not just clutch wear. If that bearing debris went through the clutch packs, the steels should be inspected and usually replaced along with the carrier.
Start with the software and fluid. Ford released PCM and solenoid strategy updates for low-speed shudder and buck, and a contaminated separator plate orifice can cause no-reverse complaints that have nothing to do with the clutches. Our 8F35 bulletins guide walks through all four Ford TSBs so you can rule those out first. If the unit still slips, the general flare vs slip guide helps you tell a control problem from a worn pack. Once the transmission is apart, lay each steel on a flat surface and look for heat discoloration, scoring or a dished shape.
The listing covers the Ford 8F35 from 2018 production on, which in vehicle terms is the 8-speed front-drive unit used from the 2019 model year Edge and Nautilus onward, plus later Escape, Bronco Sport, Maverick (non-hybrid), Transit Connect and Corsair applications. The plate counts above are what Raybestos lists for STMFORD25. Count the steels in each pack during teardown and compare them to this list before you reassemble. If you are unsure which 8-speed you have, send us the year and VIN and we will check it. You can see every part we carry for this unit on the 8F35 parts page.
A bench mount fixture makes the teardown and reassembly far easier on this compact transaxle.
| Fits | 8F35 2018 |
| Part type | Clutch Module |
| Condition | New |
| Brand | Raybestos |
| Ships | From the USA |
| Warranty | 1-year |
No. STMFORD25 is a steel plate module only: 14 steels for the A, B, C, E and F clutches. Buy frictions separately, for example with our 8F35 master rebuild kit, which has frictions but no steels.
The 8F35 replaced the low/reverse clutch with a selectable one-way clutch, so there is no low/reverse friction or steel pack to service.
The front-drive 8-speed is found in 2019-up Ford Edge and Lincoln Nautilus, plus later Escape, Bronco Sport, Maverick, Transit Connect and Lincoln Corsair models. Send us your year and VIN if you want us to confirm.
Steels that are flat, evenly colored and smooth can be reused, but plates with heat spots, scoring or warpage will chew up new frictions. Most rebuilders replace them when the unit has burnt fluid or debris from the planet carrier bearings.
Ford specifies Motorcraft Mercon ULV for the 8F35. Do not substitute Mercon LV or a universal fluid.
Yes. Reset and run the transmission adaptive learn with a capable scan tool, then drive through all gears so the computer relearns clutch fill times.
