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Eligible for Return, Refund or Replacement within 30 days of receipt
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OTC 4573 Universal Overhead Valve Spring Compressor

4.3 out of 5 stars 732 ratings
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  • Permits removal and installation of valve springs with out removing the cylinder head on many cars and light trucks
  • Spring loaded offset jaws easily grip and compress valve springs
  • Durable steel construction
  • One year limited warranty
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Product description

Permits removal and installation of valve springs with out removing the cylinder head on many cars and light trucks. Durable steel construction. Spring loaded offset jaws easily grip and compress valve springs.

Product information

Technical Details

Manufacturer ‎SPXSF
Place of Business ‎WARREN, MI, 48092 US
Brand ‎OTC
Model ‎OTC 4573 Universal Overhead Valve Spring Compressor
Product Dimensions ‎14.48 x 22.1 x 2.79 cm; 1 g
Item model number ‎4573
Is discontinued by manufacturer ‎No
Exterior ‎Smooth
Manufacturer part number ‎4573
OEM part number ‎4573
Item Weight ‎1 g
Country of origin ‎Taiwan

Additional Information

ASIN B000F5HUUI
Customer Reviews
4.3 out of 5 stars 732 ratings

4.3 out of 5 stars
鶹 Rank
Date First Available Aug. 14 2012

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OTC 4573 Universal Overhead Valve Spring Compressor

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Customer reviews

4.3 out of 5 stars
732 global ratings

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Customers say

Customers like the functionality and quality of the product. They mention it works great for many automotive applications and is of good quality.

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FunctionalityQuality
7 customers mention "Functionality"7 positive0 negative

Customers like the functionality of the product. They mention it works great for what it is for, works perfectly for in car valve spring replacement, and removes valves on 73 VW vans.

"Worked pretty good. I used it to replace valve seals on an AMC 401 V8 and it did the job...." Read more

"...I suspect it should work well for many automotive applications, but GL1100 owners beware." Read more

"worked well for removing valves on 73 vw van" Read more

"This tool did what it supposed to do, works great for sbc 350 did all the New springs and seals, good tool for great price, Thanks" Read more

5 customers mention "Quality"5 positive0 negative

Customers are satisfied with the quality of the product. They mention it's a good quality for a good price.

"Quality is actually really good, changed all 16 valve springs on my 496c.i. chevy big block motor, seems it will last me a lifetime" Read more

"...Maybe wear some gloves? It's not flimsy at all and seems well made for a cheap tool...." Read more

"...However, this is definitely a well-built, well-designed quality tool...." Read more

"I presume that your mileage with this tool may vary. The quality of the tool is fine, however the design itself requires a wide spring pitch and..." Read more

It's a good quality for good price
5 out of 5 stars
It's a good quality for good price
This tool did what it supposed to do, works great for sbc 350 did all the New springs and seals, good tool for great price, Thanks
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Top reviews from Canada

  • F. Arseneau
    5.0 out of 5 stars Worked pretty good. I used it to replace valve seals ...
    Reviewed in Canada on May 30, 2016
    Verified Purchase
    Worked pretty good. I used it to replace valve seals on an AMC 401 V8 and it did the job. There's a little learning curve to figure out where to stick the grips into to be able to compress enough, and you need strong hands to crank on it. To make it better, they should have a way to use a socket wrench on it or something with a bit more leverage.
    Helpful
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  • TREVOR
    5.0 out of 5 stars Perfect 👌
    Reviewed in Canada on August 7, 2023
    Verified Purchase
    Quality is actually really good, changed all 16 valve springs on my 496c.i. chevy big block motor, seems it will last me a lifetime
    Helpful
     Report
  • Roger E.
    4.0 out of 5 stars Great service
    Reviewed in Canada on April 21, 2022
    Verified Purchase
    Nice product easy to use
    One person found this helpful
    Helpful
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  • Ian
    5.0 out of 5 stars Get the job done cheap!
    Reviewed in Canada on January 14, 2016
    Verified Purchase
    Let it be known I had not removed valve springs until today so my experience with spring compressors is equal to 0.

    I watched some YouTube videos on how to use it and was able to compress and remove the 12 springs from my Chevy 250 Inline 6 head in about an hour. I took my time and didn't feel impeded by the tool at any point.

    Some thoughts though, get a magnet to remove the little valve keepers as sticking your digits between the claws of this thing is risky at best. My stock springs were fairly tame but using this with performance springs could be harder, but if you take your time it'd work just fine I'm sure.

    I've read comments about people wanting a nut on the top so a wrench could be used to turn it. I think it would be more likely to slip off the springs if a wrench was used as the torque at the top would pull the claws off. Either way, I didn't find it that hard by hand. Maybe wear some gloves?

    It's not flimsy at all and seems well made for a cheap tool. I gave it a 5 star rating as its a universal tool that allowed me to get a job done for very little money.
    One person found this helpful
    Helpful
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  • Mark S
    3.0 out of 5 stars Nice tool, but didn't work for me ...
    Reviewed in Canada on April 22, 2017
    Verified Purchase
    I purchased this tool specifically to remove the valve springs on my 1982 Honda GL1100 motorcycle. I needed to replace all of the valve stem seals, but I wanted to avoid the additional time and cost associated with head removal. The GL1100 engine has 2 springs per valve - both mounted concentrically on the valve stem, the weaker spring inside the stronger outer spring. Unfortunately, the gripper jaws did not extend far enough into the spring coil to "reliably" compress both springs. Furthermore, the spring grip jaws are "offset" such that one jaw grips a lower coil on one side of the spring, and the other jaw grips a coil one or two turns higher on the same spring. I am at a loss to explain the advantage of this "offset". In my case, I was unable to insert the jaws on the lowest turns of the spring because the coils were tightly spaced. When I finally did get both jaws on each side of the spring, the "offset" resulted in incomplete spring compression and I was unable to remove the keepers.
    However, this is definitely a well-built, well-designed quality tool. I suspect it should work well for many automotive applications, but GL1100 owners beware.
    One person found this helpful
    Helpful
     Report
  • L.J
    5.0 out of 5 stars easy to use
    Reviewed in Canada on January 21, 2022
    Verified Purchase
    worked well for removing valves on 73 vw van
    Helpful
     Report
  • Charanjit Ram
    5.0 out of 5 stars It's a good quality for good price
    Reviewed in Canada on December 19, 2020
    Verified Purchase
    This tool did what it supposed to do, works great for sbc 350 did all the New springs and seals, good tool for great price, Thanks
    Customer image
    Charanjit Ram
    5.0 out of 5 stars
    It's a good quality for good price

    Reviewed in Canada on December 19, 2020
    This tool did what it supposed to do, works great for sbc 350 did all the New springs and seals, good tool for great price, Thanks
    Images in this review
    Customer imageCustomer image
    3 people found this helpful
    Helpful
     Report
  • Steve
    5.0 out of 5 stars Woks perfect
    Reviewed in Canada on February 28, 2021
    Verified Purchase
    Works perfectly for in car valve spring replacement
    Helpful
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Top reviews from other countries

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  • Fernando
    5.0 out of 5 stars Muy buen producto recomendado
    Reviewed in Mexico on April 17, 2021
    Verified Purchase
    Excelente herramienta.
    Report
  • LightingShark
    5.0 out of 5 stars Good
    Reviewed in the United States on May 24, 2025
    Verified Purchase
    Works well. Doesn’t allow you to get a lot of torque on the little wheel to compress the spring but it still does the job.
    Report
  • Wyatt B.
    5.0 out of 5 stars Quality Taiwanese piece
    Reviewed in the United States on March 11, 2025
    Verified Purchase
    Made in Taiwan, not China, which is a big plus in my book. I changed valve springs on a set of Ford 390 heads with this and it worked great. Seems like a quality tool for occasional jobs, and it doesn't take up a lot of tool box space. Good for the DIY-er on a budget who also doesn't want to buy Chinese junk.
    Report
  • Dragonborn96
    4.0 out of 5 stars Works
    Reviewed in the United States on June 5, 2025
    Verified Purchase
    Works but the star shaped handle isn't super nice to your hands. I have rough callous hands and this sucker can bite into and/or be abrasive to the skin. I wore a single nitrile glove and it tore the glove off of my hands. If this thing had a rubber skin handle, it'd be perfect.

    Maybe I got unlucky and got one that wasn't sanded down or properly machined? Perhaps you might not have the same issue.
    Report
  • 鶹 Customer
    5.0 out of 5 stars Got the job done on my AMC360!
    Reviewed in the United States on January 9, 2025
    Verified Purchase
    Worked but took some getting used to. Towards the end of the project the top handle was getting quite loose. I expect to have to weld this for the next time I have to use it. I might weld a sacrificial socket to the top to make it quicker to use haha. Wear a mechanics glove and it saves your hands.
    Customer image
    鶹 Customer
    5.0 out of 5 stars
    Got the job done on my AMC360!

    Reviewed in the United States on January 9, 2025
    Worked but took some getting used to. Towards the end of the project the top handle was getting quite loose. I expect to have to weld this for the next time I have to use it. I might weld a sacrificial socket to the top to make it quicker to use haha. Wear a mechanics glove and it saves your hands.
    Images in this review
    Customer image
    Report