Air Conditioning Bypass Pulley
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Air Conditioning Bypass Pulley
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Dorman - Help Air Conditioning Bypass Pulley

Part No. 34191 Warranty Details  
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Now there's an affordable way to get your vehicle up and running after a seized A/C compressor renders it inoperable. Our A/C Compressor By-Pass Pulley is installed in place of a new compressor.

Product Features:
  • Significantly cuts costs by eliminating the need for a new A/C compressor
  • Uses original length serpentine belt
  • Lightweight for easy handling
  • Rigorous quality control measures have been undertaken to ensure that this part conforms to product standards
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Compressor Type:FS10
Groove Quantity:6-Groove Serpentine Belt
Material:Plastic Pulley, Aluminum Bracket
Mounting Bracket Included:Yes
Mounting Hardware Included:Mounting Bolts, Spacers, Washer
New Or Remanufactured:No
Pulley Outside Diameter:114 mm
Pulley Quantity:1
Pulley Type:6-Groove Serpentine Belt


by PowerReviews
Dorman - HelpAir Conditioning Bypass Pulley

(based on 1 review)

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Reviewed by 1 customer

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(6 of 13 customers found this review helpful)


bolts were to long


from mississippi

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3 or more reviews submitted


  • Lightweight
  • Saved 200 Dollors Using 1


  • No Improvement In Performance

Best Uses

  • Everyday Driving

Comments about Dorman - Help Air Conditioning Bypass Pulley:

We got the part waited a few days . Then we installed it but it would not tighten down. So i had to cut a 1/4 inch off the bolts clean up the threads and reinstall part it is working fine now.

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Do you have questions about this product?


Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

4 Questions | 4 Answers
Displaying questions 1-4
  • Q:

    What are the pros and cons of putting this in place?
    Asked on 10/18/2010 by inkspot from Escondido ,Ca

    1 answer



      Pros- Less load on the engine, possible better fuel economy, and possible better performance.
      cons- No AC.

      Answered on 10/19/2010 by Kevin the King of Auto Parts. from AAP
  • Q:

    how does this attach.
    Asked on 10/9/2010 by Anonymous

    1 answer



      Using the same mounting bolts and location as the A/C compressor once it is moved.

      Answered on 10/11/2010 by Mike the master of auto parts from AAP
  • Q:

    do you need to discharge (or release) freon, to take out the Compressor?
    Asked on 7/25/2010 by drewskia from dc

    1 answer



      Yes, you will have to evacuate the system of the freon inside before you take the compressor out.

      Answered on 7/25/2010 by Mike from AAP
  • Q:

    do you have to remove old compressor to install this pully and if so how do you go about doing that?
    Asked on 3/6/2010 by lou from homestead

    1 answer



      Yes, because this will need to bolt up in place of the air compressor.

      Answered on 3/29/2010 by MIke from AAP
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