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Snow, ice, dirt, and dust can interfere or damage your windshield wipers and the motion transmission mechanism. A bent or damaged link can cause the wipers to not work or work incompletely. These parts will also cause an annoying squeaking when they wear out. In general replacing windshield wiper transmission parts is not difficult. This may vary on some applications. It requires basic tools and removal and installation of small body parts such as cowl vent grilles. This replacement wiper transmission arm may be just what you need to get your windshield wiper system working properly again.


  • Windshield Wiper Transmission
  • Replaces dealer part numbers: 4L34-17500-A, 4L34-17500-AB, 4L34-17500-AC, 4L34-17500-AD, 6L34-17500-AA, 6L34-17500-AB, 6L34-17500-AC, 6L3Z-17508-AC, WM603, 4L3417500A, 4L3417500AB, 4L3417500AC, 4L3417500AD, 6L3417500AA, 6L3417500AB, 6L3417500AC, 6L3Z17508AC
  • Direct replacement
  • Built to strict quality control standards

This wiper transmission makes a great replacement and has good cost savings over a dealer unit.

Left Hand Drive Note:

“All of our auto parts are intended for Left Hand Drive USDM vehicles and might not have been tested on Right Hand Drive platforms. If your vehicle is Right Hand Drive, please do your research prior to making a purchase to ensure the part is correct for your specific vehicle.”

Item Condition: New

Attention California Customers:

WARNING: Cancer and Reproductive Harm -

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

  1. step : Removing the Wiper Arm (0:40)
    • Lift the wiper arm up
    • Pry on the tab on the side of the wiper arm
    • Lift the wiper arm up off of the stud
    • Pry out the clip on either side of the cowl panel
    • Lift the cowl panel up and off
    • Remove the weather strip
  2. step : Removing the Cowl Panels (1:02)
    • Push in the clips on the driver side cowl panel and lift the panel up
    • Pull the panel forward to remove it
    • Disconnect the wiper hose from the panel
    • Remove the 7mm bolt from the passenger side cowl panel
    • Push in the clips on the panel and lift the panel up
    • Pull the panel forward to remove it
    • Disconnect the wiper hose
  3. step : Removing the Transmission (2:21)
    • Disconnect the transmission motor harness
    • Remove the three 8mm bolts from the transmission linkage
    • Lift the wiper transmission up and out
  4. step : Removing the Transmission Motor (2:57)
    • Pry off each arm from the stud with a flat blade screwdriver
    • Remove the 8mm bolt from the wiper transmission
    • Pry the arm off
    • Remove the three 8mm bolts from the transmission
    • Lift the transmission off the motor
  5. step : Installing the Transmission Motor (3:41)
    • Insert the transmission onto the new motor
    • Lower the transmission down onto the motor
    • Tighten the three 8mm bolts
    • Insert the transmission arm in place
    • Tighten the 8mm bolt to the transmission arm
    • Push on the two transmission arms
  6. step : Installing the Transmission (4:30)
    • Insert the wiper transmission into place
    • Tighten the three 8mm bolts to the transmission linkage
    • Connect the transmission motor harness
  7. step : Testing the Transmission (5:20)
    • Turn the key on
    • Turn the wipers on and off the test the transmission
    • Turn the vehicle off
  8. step : Installing the Cowl Panels (5:28)
    • Line up the passenger side cowl panel with the slots on the vehicle
    • Connect the washer hose
    • Tighten the 7mm bolt to the passenger panel
    • Line up the driver side cowl panel with the slots on the vehicle
    • Connect the driver side panel washer hose
    • Push the panel into place
  9. step : Reinstalling the Wiper Arms (6:52)
    • Push the weather strip into place
    • Straighten the wiper arms out
    • Push the wiper arms onto their studs

Tools needed for replacement:

    Ratchets & Related

  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 8mm Socket
  • 7mm Socket

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Year Make Model Description
2004Ford F150 Truck Ford F150 Truck New Body Style Windshield Wiper Transmission
2005-2007Ford F150 Truck Ford F150 Truck Windshield Wiper Transmission
2006-2007Lincoln Mark LT Lincoln Mark LT Windshield Wiper Transmission
Only 3 left in stock
Part #: 1AWWT00158

Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

How-to Video:

(07:36 min)