Dorman 742-178 front left window motor for the 2008-2017 Ford Expedition and other vehicles drives the regulator that raises and lowers the window glass. This Dorman OE FIX smart motor, also called a power window motor, is designed to replace a factory smart motor that has failed from damage, normal wear or collision impact.
- Upgraded electronics for greater processing power and faster response times
- Protection against voltage spikes, heat-related failures and motor stall conditions
- Printed circuit board (PCB) coated with a special resin that resists moisture, dust and other contaminants
- Tested to meet federal motor vehicle anti-pinch standards
Quick facts
- Part: Dorman 742-178 window motor
- Also called: power window motor
- Fits: 2008-2017 Ford Expedition and other vehicles
- Position: Front left
- Condition: New
A window that moves slowly, stops partway or will not move can mean this window motor is worn, though the window switch or the regulator can be behind the same signs, so find the cause before replacing it.
Fits
It fits the 2008-2017 Ford Expedition and the 2007-2017 Lincoln Navigator, and each takes one at the front left. This listing is one motor for the front left; the front right is a separate part.
Specifications
Fit and size
- Position: Front left
- Quantity per vehicle: 1
- Connection: Plug-in
Build and materials
- Type: Smart motor with upgraded electronics
- Circuit board: Coated with a special resin
- FMVSS compliant: Yes
- Condition: New
- Country of origin: China
In the box
One window motor. The regulator, window lift gear, mounting hardware and wiring harness are not included, so plan on new mounting hardware, since the old pieces may not be reusable.
Installation notes
- The motor has proprietary software that helps ensure fast and simple calibration.
- No special tools or skills are required.
Interchange: 383329 · 423081 · WLM3003 · 7L7Z7823395A · AL7Z7823395A · AL7Z7823395B · WLM198 · WLM223 · WMO1596L
This part cross-references / interchanges with the following part numbers:
383329, 423081, WLM3003, 7L7Z7823395A, AL7Z7823395A, AL7Z7823395B, WLM198, WLM223, WMO1596L
Frequently Asked Questions
Is this a window motor for the 2008-2017 Ford Expedition front left window?
Yes. Dorman 742-178 is a front left window motor for the 2008-2017 Ford Expedition, and it also fits the 2007-2017 Lincoln Navigator.
Does the Dorman 742-178 come with the regulator?
No. Dorman 742-178 is the window motor only; the regulator, window lift gear, mounting hardware and wiring harness are not included.
Does this Dorman window motor have a plug-in connector?
Yes. This front left window motor connects through a plug-in connector rather than hardwired leads.
Why does the Dorman window lift motor use upgraded electronics?
Factory smart motors often fail from an electronic fault, and reusing the same design can invite similar repairs. This window motor adds upgraded electronics to address that.
Is Dorman 742-178 an interchange for WLM198?
Yes. WLM198 is one of the numbers this Dorman 742-178 window motor replaces, along with 383329 and 423081.
