This replacement serpentine belt tensioner is just what you need to get your vehicle in good working order again! If you are hearing a whirring noise from the front of your engine or if your belt often screeches you may be in need of a new belt tensioner. This part commonly wears out between 60,000 and 70,000 Miles. If it fails suddenly it can leave you stranded.

Specifications:

  • Brand new, not rebuilt or remanufactured
  • Includes pulley
  • Replaces dealer part numbers: 6L2Z-6B209-A, YL2Z-6B209-AA, 6L2Z6B209A, YL2Z6B209AA
  • Direct replacement
  • Built to strict quality control standards

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

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. Please keep your invoice for proof of this warranty.

  1. step : Removing the Intake Hose (1:06)
    • Familiarize yourself with the belt routing diagram
    • Remove the two Phillips screws from the throttle body cover
    • Remove the 7mm bolt from the throttle body cover
    • Pull off the throttle body cover
    • Loosen the intake hose clamps with a flat blade screwdriver
    • Pull the breather tube out of the intake hose
    • Pull the intake hose off the throttle body
  2. step : Removing the Serpentine Belt (2:33)
    • Turn the serpentine belt tensioner counterclockwise with a 3/8 inch drive ratchet
    • Pull the serpentine belt off the pulleys
    • Release the belt tensioner
    • Pull out the belt
  3. step : Removing the Belt Tensioner (3:41)
    • Remove the 13mm bolt from the belt tensioner
    • Apply rust penetrant to the tensioner if necessary
    • Remove the belt tensioner
  4. step : Installing the Belt Tensioner (4:59)
    • Install the 13mm bolt into the tensioner
    • Put the tensioner into place, using the alignment pin
    • Start the 13mm bolt by hand
    • Tighten the 13mm bolt to 35 foot-pounds of torque
  5. step : Installing the Belt (5:42)
    • Check the belt for cracking, dry rot, tears, or burns
    • Use a new belt if necessary
    • Loop the belt around the crankshaft
    • Bring it around the water pump
    • Bring it under the A/C compressor
    • Bring it over the power steering pump
    • Bring the belt from the crankshaft around the tensioner
    • Bring it over the alternator
    • Turn the serpentine belt tensioner counterclockwise with a 3/8 inch drive ratchet
    • Pull the belt under the idler pulley
    • Check that the belt is routed correctly
    • Release the belt tensioner
  6. step : Installing the Intake Hose (7:41)
    • Connect the breather tube to the intake hose
    • Connect the intake hose to the intake box
    • Connect the intake hose to the throttle body
    • Tighten the hose clamps with a flat blade screwdriver
    • Putt the throttle body cover into place
    • Insert the two Phillips screws into the throttle body cover
    • Insert the 7mm bolt into the throttle body cover

Tools needed for replacement:

    Ratchets & Related

  • Torque Wrench
  • 3/8 Inch Drive Ratchet

  • Screwdrivers & Related

  • Phillips Head Screwdriver
  • Flat Blade Screwdriver

  • Sockets - Metric

  • 7mm Socket
  • 13mm Socket

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Will this fit 3.0 motor?
Cindy W on Sep 29, 2017
BEST ANSWER: No, this will not fit the 3.0L motor.

Vehicle Fit

  • 2000 Ford Explorer Serpentine Belt Tensioner with Pulley V6 4.0L SOHC (8th Vin Digit E)
  • 2001-2010 Ford Explorer Serpentine Belt Tensioner with Pulley V6 4.0L
  • 2001-2010 Ford Explorer Sport Trac Serpentine Belt Tensioner with Pulley V6 4.0L
  • 2001-2011 Ford Ranger Serpentine Belt Tensioner with Pulley V6 4.0L
  • 2001-2009 Mazda B4000 Truck Serpentine Belt Tensioner with Pulley V6 4.0L
  • 2000-2010 Mercury Mountaineer Serpentine Belt Tensioner with Pulley V6 4.0L

This part replaces:

  • OE # 6L2Z6B209A
  • OE # YL2Z6B209AA
  • Dorman 419-210
Part #: 1AEBT00040

Ships Same Day for orders placed by 4 P.M. ET

How-to Video:

(08:44 min)