Universal Overhead Valve Spring Compressor
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Universal Overhead Valve Spring Compressor
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AutoCraft Universal Overhead Valve Spring Compressor

Part No. AC521 Warranty Details  
Remove valve springs without removing cylinder head

Product Features:
  • Offset jaws grip and hold springs in compression
  • Suitable for most vehicles
  • Lifetime warranty
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Valve Spring Compressor Finish:Zinc Plated
Valve Spring Compressor Material:Carbon Steel
Valve Spring Compressor Usage:Remove Valve Springs without Removing Cylinder Head

REVIEW SNAPSHOT®

by PowerReviews
AutoCraftUniversal Overhead Valve Spring Compressor
 
3.1

(based on 7 reviews)

Ratings Distribution

  • 5 Stars

     

    (2)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (2)

67%

of respondents would recommend this to a friend.

Pros

No Pros

Cons

No Cons

Best Uses

  • Home (3)
    • Reviewer Profile:
    • Auto enthusiast (5)

Reviewed by 7 customers

Displaying reviews 1-7

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4.0

Works well. Don't need to remove the head to use this tool.

By 

from Lithia Springs, GA

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Verified Buyer
3 or more reviews submitted

Comments about AutoCraft Universal Overhead Valve Spring Compressor:

Just make sure you put the clamp on the absolute lowest part of the spring, and also directly centered on top of the spring. You don't to risk it sliding and the spring flying out.

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(0 of 4 customers found this review helpful)

 
1.0

No good for beehive springs

By 

from Wyoming

About Me Auto Enthusiast

Pros

    Cons

    • Difficult To Use

    Best Uses

      Comments about AutoCraft Universal Overhead Valve Spring Compressor:

      This tool will not hold on to GM valve springs found in the LS platform engines. It will slip off while the spring is compressed causing damaged keepers. FYI.

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      (5 of 9 customers found this review helpful)

       
      5.0

      over head valve compessor

      By 

      from DENVER

      About Me Auto Enthusiast

      See all my reviews

      Verified Buyer
      Helpful Reviewer

      Pros

      • Durable
      • Good Grip

      Cons

        Best Uses

        • Home

        Comments about AutoCraft Universal Overhead Valve Spring Compressor:

        IT WORKED GREAT OTHER THAN SOME CLERANCE ISSUES ON BACK VALVES. A DETACHIBLE HANDEL WITH A RACHET ATACHMENT WOULD HAVE MADE IT EASIER TO USE.

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        (7 of 13 customers found this review helpful)

         
        5.0

        Worked great on GM 3400 V6 3.4l

        By 

        from Dayton, OH

        About Me Auto Enthusiast

        See all my reviews

        Ask me a question

        3 or more reviews submitted

        Comments about AutoCraft Universal Overhead Valve Spring Compressor:

        The handle was just a little uncomfortable to use, but it wasn't terrible.
        This tool worked great on a Pontiac 3.4l engine.
        I think it was a very good value.
        I don't think it will break with repeated use.

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        (7 of 13 customers found this review helpful)

         
        1.0

        just not right

        By 

        from Topeka Ks

        About Me Auto Enthusiast

        Pros

        • None

        Cons

        • Limited Function

        Best Uses

        • Dont Know

        Comments about AutoCraft Universal Overhead Valve Spring Compressor:

        this unit will not fit in available space for multi valve engines like GMs 2.4L. Needs room to fit over valve.

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        (11 of 20 customers found this review helpful)

         
        2.0

        Lasted through a set of heads so far....

        By 

        from Michigan

        About Me Auto Enthusiast, Mechanic

        See all my reviews

        Ask me a question

        Verified Buyer
        3 or more reviews submitted

        Pros

          Cons

            Best Uses

            • Home

            Comments about AutoCraft Universal Overhead Valve Spring Compressor:

            Other than the twist handle being too thin for comfort it has survived one set of heads. I'm not sure how durable it's going to be in the long run but it does have a lifetime warranty so that's a plus for a replacement in the future. Hopefully it lasts though. I only got this cheap one since it was the only one in stock and I needed one immediately.

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            (16 of 25 customers found this review helpful)

             
            4.0

            Did what I needed

            By 

            from Virginia Beach, VA

            About Me Amateur Mechanic, Auto Enthusiast

            Verified Buyer
            Helpful Reviewer

            Pros

            • Compact
            • Robust

            Cons

              Best Uses

              • Automotive Repair Shop
              • Home

              Comments about AutoCraft Universal Overhead Valve Spring Compressor:

              I bought this valve compressor as an inexpensive solution for doing a valve job on the 1.6 litre Renault motor in my Lotus Europa. It worked well for removing the valve springs and should also be good when the time comes to reassemble.

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              Displaying reviews 1-7

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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 | 5 Answers
              Displaying questions 1-4
              • Q:

                Will this tool fit on the valves that are used in a GM 3400(3.4L)V6 engine?

                Car: 2000 Pontiac Grand Am
                Asked on 6/30/2015 by Rob from NY

                1 answer

                • CUSTOMER CARE

                  A:

                  Hi Rob, I'm glad to assist you! This AutoCraft Universal Overhead Valve Spring Compressor (Part No. AC521) is universal and not vehicle specific. It helps to remove valve springs on most cars and light trucks without removing cylinder head

                  Answered on 6/30/2015 by Solomon
              • Q:

                Well this work on a 2000 suzki grand vitra 2.5
                Asked on 11/15/2013 by augie from denver colo

                1 answer

                • CUSTOMER CARE

                  A:

                  Good question Augie, this part is universal and not vehicle specific. It fits most of the vehicles.

                  Answered on 11/16/2013 by Steve from AAP
              • Q:

                Can i use this tool to remove the valve springs on my Harley?
                Asked on 11/28/2010 by fillister from Jackson Wi

                1 answer

                • CUSTOMER CARE

                  A:

                  Yes, this is designed to remove valve springs.

                  Answered on 12/2/2010 by David the Dynamite Parts Guy from AAP
              • Q:

                Does compressed air still have to be used to keep valve up while removing retainers and keepers with this design or any other Autocraft valve spring compressor?
                Asked on 6/10/2010 by Anonymous from Sale Creek, TN

                2 answers

                • CUSTOMER CARE

                  A:

                  Yes compressed air is still needed to keep the valve up.

                  Answered on 6/22/2010 by Kevin from AAP
                • A:

                  If your cylinder head is still attached to the block, you MUST have compressed air into your cylinder to hold the valve up, or you WILL drop the valve onto the top of the piston!! Then your looking at a major job!! Make sure to purchase the correct tool, to screw into where the spark plug was, and make sure you have plenty of air pressure and a GOOD connection to the tool, so you DON'T drop that valve. Take your time, and DON'T rush!!! When your done putting your valve spring retainers in place, and remove your tool, gently tap the top center to ensure the retainers are secured properly. Use a small hammer, and GENTLY tap the center of valve retainer area, AFTER your tool is removed, KEEP in mind, LEAVE the compressed air tool connected until AFTER you tap your valve, to make sure the retainers are in the correct position and seated properly on the valve. Once your satisfied, then release your compressed air and move to the next one. I DO NOT WORK FOR ADVANCE IN ANY CAPACITY!!!

                  Answered on 2/15/2015 by Chuck from Highland Springs Va
              Displaying questions 1-4

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