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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

Item Condition: New

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 : 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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Customer Q&A
Ask a question to 1A Auto customers who purchased the product
What do you do with the a/c manifold once the bypass pulley is in ?
Hunter C November 23, 2016
you can use cable-ties to secure it out of the way(which is what i did) or remove it from the vehicle. if you decide to leave it in the vehicle make sure it will not come in contact with any hot or moving parts.
DOUGLAS L November 23, 2016
You can have the systems Freon drained and unbolt from the vehicle removing that excess weight and clutter
Brian F November 23, 2016
Edited I use all bushings and what is the round washer for?
Dennis H June 26, 2018
Year Make Model Description
1992-2003Ford Taurus Ford Taurus (excluding SHO Models) A/C Bypass Pulley V6 3.0L Dorman 34166
1995-1998Ford Windstar Ford Windstar A/C Bypass Pulley V6 3.0L Dorman 34166
1995-2002Lincoln Continental Lincoln Continental A/C Bypass Pulley Dorman 34166
1992-2003Mercury Sable Mercury Sable A/C Bypass Pulley V6 3.0L Dorman 34166
Only 3 left in stock
Part #: 1AEPM00006

Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

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Brand #: 34166

How-to Video:

(12:38 min)