10-Speed Automatic Transmission Assembly for 2021-2025 Ford Expedition, F-150

A quick look at your own vehicle makes sure the right transmission shows up:

• Confirm the vehicle is a 4x4 (4WD) model.
• Confirm the engine is a 2.7L EcoBoost V6 or 3.5L EcoBoost V6 (not compatible with 5.0L V8, 3.0L Diesel, or Hybrid).
• Verify the current transmission ID tag matches ML3P-7000-FA or NL1P-7000-DA.

What the install really takes — plan and budget with confidence:

Special tools this job needs:

• High-lift transmission jack with safety straps
• Ford 307-569 Transmission Line Disconnect Tool
• Ford-compatible scan tool (Ford IDS/FDRS or FORScan with OBDLink EX adapter)
• Torque wrench (inch-pounds and foot-pounds)

Budget for these consumables at install:

• Ford Mercon ULV (Ultra Low Viscosity) fluid (Specification WSS-M2C949-A / XT-12-QULV)
• New transmission filter and pan gasket
• Front pump/torque-converter seal (Ford Part HL3Z-7A248-A)
• Hook seal (JL3Z-7570-A) / tail housing seal
• Heated back-flush of transmission cooler and lines (or complete cooler replacement)

What your vehicle’s computers will need after the swap:

What’s involved: Solenoid Body Strategy Programming & Transmission Adaptive Relearn

The Powertrain Control Module (PCM) must be programmed with the replacement unit's unique 13-digit Solenoid Strategy and 12-digit Solenoid ID (found on the transmission case tag). This can be done using Ford OEM scan tools (IDS/FDRS) or FORScan with an extended license. An Adaptive Learning Drive Cycle must be performed after programming.

Pro tips for a smooth first start-up — hand them to whoever does the install:

• Torque Converter Seating: Ensure the torque converter is fully seated (~20mm / 0.78 inches from bellhousing face) before bolting to the engine to avoid cracking the front pump gear.
• Write Down Strategy Tag: Take a photo of the 13-digit Solenoid Strategy and 12-digit Solenoid ID on the driver's side of the case before installation, as it is blocked by the cab tunnel once installed.
• Fluid Level Check Temperature: Check fluid level only when idling in Park with transmission fluid temperature strictly between 206°F and 215°F (96°C to 101°C). Checking cold leads to severe under-filling.
• Dowel Pin Alignment: Ensure engine block alignment dowel pins are present and not stuck in the old transmission to prevent crooked seating and pump failure.

Easy to get right once you know them:

• Skipping Solenoid Strategy Programming: Attempting to run the transmission without programming the new strategy, resulting in immediate harsh shifts, slipping, and rapid clutch destruction.
• Using the Wrong ATF: Using Mercon LV or other universal fluids instead of the required ultra-low viscosity Mercon ULV.
• Improper Fluid Level Check: Checking the fluid level cold instead of at the hot operating temperature (206°F-215°F), leading to running the unit low on fluid.
• Reusing a Contaminated Cooler: Failing to perform a heated flush or replacement of the cooler, allowing debris from the failed transmission to destroy the new unit.

Not issues with the units on this page — the manufacturer documented these for every transmission of this family, wherever you buy one. Handy for your installer: