This Bypass pulley bolts on to your engine in the same location as your malfunctioning Air Conditioning compressor, allowing you to use your original serpentine belt. A malfunctioning compressor can be noisy and cause premature damage to your serpentine belt. This is a cost effective alternative to costly repairs to your Air conditioning system.


  • Built to strict quality control standards
  • Includes bracket, highest quality bearing, and correct size pulley
  • Fits perfectly in the place of an A/C compressor.
  • Allows you to use your original serpentine belt
  • Fits 3.0L V6 engines excluding SHO models with the Yamaha Engine

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 : Evacuate your A/C system (3:15)
  2. step : Disconnect the battery (1:48)
    • Use your 8mm socket to disconnect the negative battery cable
  3. step : Loosen and remove the serpentine belt (1:53)
    • Use your 15mm wrench and an extra piece of pipe.
    • Apply it to the belt tensioner and turn it clock wise.
    • Remove the serpentine belt.
  4. step : Access the compressor (2:38)
    • Move the fuse box out of the way by pulling on the tabs and lifting it up and to the side.
    • Remove the radiator fan
    • Unplug it and pull out the pins from the fan shroud.
    • Repeat for the second fan.
  5. step : Remove the A/C compressor (6:03)
    • Remove the mounting bolts on the A/C compressor
    • Pull the A/C compressor out
  6. step : Install the bypass pulley (7:49)
    • Place it where the compressor was mounted and bolt it in.
    • Put a bushing on with each bolt.
    • The bypass pulley installs with 3 bolts rather than 4 like the compressor.
    • Use wire ties to secure the harnesses and tidy everything up.
  7. step : Reassemble and finish up (10:09)
    • Replace the fans
    • Put the fuse box back where it lives.
    • Use your diagram to put the serpentine belt back on.
    • Check the belt and all the pulleys for any damage.
    • Reconnect the battery

Tools needed for replacement:

    Ratchets & Related

  • Socket Extensions
  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 10mm Socket
  • 8mm Socket
  • 15mm Socket
  • 13mm Socket

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Browse 1 question Browse 1 question and 2 answers
What do you do with the a/c manifold once the bypass pulley is in ?
Hunter C on Nov 22, 2016
BEST ANSWER: You can have the systems Freon drained and unbolt from the vehicle removing that excess weight and clutter

Vehicle Fit

  • 1992-2003 Ford Taurus (excluding SHO Models) A/C Bypass Pulley V6 3.0L Dorman 34166
  • 1995-1998 Ford Windstar A/C Bypass Pulley V6 3.0L Dorman 34166
  • 1995-2002 Lincoln Continental A/C Bypass Pulley Dorman 34166
  • 1992-2003 Mercury Sable A/C Bypass Pulley V6 3.0L Dorman 34166

This part replaces:

  • Dorman 34166
Only 1 left in stock
Part #: 1AEPM00006

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

Brand #: 34166

How-to Video:

(12:38 min)