FAERSI Power Door Lock Actuator Left Driver Side — Direct-Fit OEM Match, Quiet Motor

FAERSI left-side power door lock actuator replaces factory units to restore reliable remote and manual locking on compatible Ford, Lincoln, Mercury and select Mazda models.

This replacement actuator is a direct-fit solution engineered to match the mounting points, electrical connector and motion of original Ford part numbers such as F81Z-25218A43-AA and 3L3Z25218A43AA. Designed for front-left (driver-side) doors, the unit is intended for a wide range of vehicles from late-1990s F-150s to 2010 Super Duty trucks and several full-size SUVs and sedans. FAERSI tests each actuator for mechanical operation and quiet closure, and supplies a one-year return policy for added confidence.

How will this actuator restore my door locking function?

The actuator drives the door latch solenoid so the lock moves when you press the key fob, door switch or use the mechanical lock. It replaces worn gears and motors that cause intermittent or no response, allowing consistent locking/unlocking when installed correctly.

• Restores electronic control of the driver-side door lock
• Matches OEM connector and mounting footprint for a direct swap
• Durable motor and reinforced plastic housing to resist wear
• Added rubber components reduce rattling and noise

Which vehicles and part numbers is this compatible with?

This FAERSI actuator fits many Ford, Lincoln, Mercury and some Mazda models across model years roughly from 1999–2010; always confirm with your vehicle year, make and model before ordering. It is sold as a direct replacement for several factory part numbers used by Ford.

• Common OEM references: F81Z-25218A43-AA, 3L3Z25218A43AA, 6L3Z25218A43AA
• Fits: F-150 (1999–2004), F250–F550 Super Duty (1999–2010), Expedition (2003–2010)
• Also services: Excursion, Navigator, Mustang, Ranger, Taurus and select Mercury models
• Check your vehicle with the year/make/model selector before purchase

What should I expect during installation and how difficult is it?

Installation is straightforward for anyone comfortable removing an inner door panel and working with basic hand tools. The FAERSI actuator is manufactured to OEM-like specifications so it typically installs without modifications and uses the factory electrical plug and mounting points.

• Replace from inside the door — panel removal required
• Use common tools: screwdriver, trim tools, possibly a socket set
• Transfer any retained linkage clips or brackets from old unit
• Test operation before reassembling door panel

How durable is this replacement and what warranty/support is included?

The unit features a reinforced housing and tested motor to extend service life versus failed OEM actuators that seize or grind. FAERSI inspects operation and includes customer support plus a 12-month return window for defects or fitment issues.

• Durable plastic casing with noise-damping rubber inserts
• Motor tested for consistent cycling under load
• 12-month returns and customer assistance from FAERSI
• Sold as a brand-new, ready-to-install front-left driver-side part

Who is this for: This FAERSI left driver-side power door lock actuator is aimed at vehicle owners, DIY mechanics and professional technicians needing a dependable, direct-replacement actuator for Ford F-Series trucks, Expedition, Excursion, Lincoln Navigator and other compatible models listed by the OEM part references. Choose this unit if you want a tested, quiet-operating replacement that matches factory fit and restores doors to normal locking behavior.