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OTC

OTC 4573 Universal Overhead Valve Spring Compressor

  • Based on 799 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Oct 14
Order within 21 hours and 30 minutes
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Features

  • OTC's Universal Overhead Valve Spring Compressor is a great option for compressing valve springs - facilitating valve spring removal or valve stem seal replacement on many Cars, Vans, & Light Trucks
  • Ideal for use on installed cylinder heads, especially in vehicles with tight underhood clearances, but can be used for bench work as well
  • Spring loaded jaws easily grip and compress valve springs
  • Legs designed with a built-in offset to compensate for spring wind - keeping tool vertical and stable during use
  • Includes two spring adapters; fits valve spring retainers up to 1-13/16 inch diameter; 1-3/8 to 5-5/8 inch jaw opening; 5-7/8 inch throat clearance

Description

OTC's No. 4573 Universal Overhead Valve Spring Compressor is a great option for compressing valve springs - facilitating valve spring removal or valve stem seal replacement on many Cars, Vans, & Light Trucks. Ideal for use on installed cylinder heads, especially in vehicles with tight underhood clearances, but can be used for bench work as well. Spring loaded jaws easily grip and compress valve springs. Legs are designed with a built-in offset to compensate for spring wind - keeping tool vertical and stable during use. Includes two spring adapters. Fits valve spring retainers up to 1-13/16 inch diameter. 1-3/8 to 5-5/8 inch jaw opening. 5-7/8 inch throat clearance. Value is at the core of the OTC tool and equipment portfolio. For a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it’s a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians’ productivity and shop profits.

Manufacturer: ‎OTC


Brand: ‎OTC


Model: ‎OTC 4573 Universal Overhead Valve Spring Compressor


Item Weight: ‎0.035 ounces


Product Dimensions: ‎5.7 x 8.7 x 1.1 inches


Item model number: ‎4573


Manufacturer Part Number: ‎4573


OEM Part Number: ‎4573


Date First Available: March 1, 2010


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Oct 14

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Well made & works great!
I just got the OTC 4573 delivered from amazon yesterday afternoon & have already used it to remove & install the valves in a 1999 Ford Ranger V6. It works great & I have had no clearance issues or any other problems. Once you attach the compressor to the top of the valve spring, the entire process takes approximately 1 minute to compress the spring, remove the keepers, and release the tension from the spring & remove the compressor. This tool is MUCH higher quality than I was expecting & I am once again happy with my choice to purchase an OTC brand tool via amazon. This is a much better quality tool than you will be able to purchase at your local "chain auto store". Unless you are seriously pressed for time, buy the OTC 4573 & wait a couple days for shipping. *** One tip I can give you for longevity of this tool: Make sure you "unscrew" the bolt completely, lube it up with thick grease (i.e. wheel bearing grease) & re-install. It only comes prepackaged with a thin coating of oil, and that will disappear overtime & the threads will wear out quickly once there is no longer lubrication on them. *** WoodstockVA ... show more
Reviewed in the United States on February 4, 2012 by RascalVA
    • Quality Taiwanese piece
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. ... show more
Reviewed in the United States on March 11, 2025 by Wyatt B.
    • Works
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. ... show more
Reviewed in the United States on June 5, 2025 by Dragonborn96
    • OTC Quality
OTC Quality… Simple and Worked Great!
Reviewed in the United States on September 21, 2026 by Bruce Phillips
    • Not a good fit for LS engines.
Don't waste your money for an LS engine. These will not fit the small springs.
Reviewed in the United States on July 22, 2026 by Brooks Agnew
    • Got the job done on my AMC360!
Review Image by Amazon Customer
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.
Reviewed in the United States on January 9, 2025 by Amazon Customer
    • Same tool, 20 years later.
I had one of these as a teenager, lost it over the years. Recently had to do some valve guide seals with the heads off. I bought another and immediately ground off the punches holding on the handle. Leaves behind a perfect flat for a crescent wrench. Definately not the right tool if you have the heads off, but THE tool if the heads are on. The one I used to have, I welded a nut to the end of the shaft. WAY easier than a crescent. Still worked exactly how i remembered and I got the job done. Tips: Keep a hand on the jaws holding them against the spring ANY TIME YOU ARE UN/COMPRESSIN THE SPRING. Make sure the center shaft is inline with the valve. If you dont have a good bite on the valve, you'll have valve parts all over the room. Get the hooks as far down the spring as you can (with the silver part as far up as possible) by just opening the jaws. Then, 'screw' the jaws down the spring as far as you can. Once you got the jaws down as far as they can, then start un/compressing the spring. A second set of hands, long needle nose pliers, and a magnet make this a 30 minute job. ... show more
Reviewed in the United States on December 25, 2014 by Mick Hansen
    • Quality
Great tool. Workes as needed.
Reviewed in the United States on April 21, 2026 by Brady Copeland

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