COMP Cams Valve Locks 3/8in Four Groove

Marsoni

M251S

$29.84

Get it in 3 business days with 1 day shipping. Friday, May 29

COMP Cams Valve Locks 3/8in Four Groovelock angle and 3 8" valve stem size are a perfect replacement lock for stock engine rebuilds. They are recommended only for street Applications with lighter valve spring loads. It is critically important to make sure valve locks match the valve size. There should always be a small gap between the two halves of the lock when they are properly positioned on the valve stem. If the two halves fit together without a gap, they are too large. If the locks

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We offer a 30-day return/exchange service after receiving.
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These are not really “industrial strength” but they work great and are decent quality, especially for the price. I bought them to use on a sheet metal barn and they hold halters, rakes and other supplies with ease. Out of curiosity I did toss a dewalt drill in one and it held even though I ordered the medium size and the drill didn’t fit super well.

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Reviewed in the United States on August 6, 2025

Verified Purchase

K. Nguyen

Battle Creek, US

★★★★★ 5

Very useful tools or helmets hanger.

These are quite useful and hold anything that’s less than 10lb. I think it can hold heavier items but I think it’s best to keep it light and the magnet strong enough to make it very convenient to affix it to any metal cabinet or poles.

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Reviewed in the United States on August 7, 2025

Verified Purchase

Julie Fleming

Carnegie, US

★★★★★ 1

Magnet strength is weak AF

Item Package Quantity: 30, Color: Black

Magnet strength is absolutely terrible! I was hoping that they would be strong against my shipping container as the product suggests, but I put a item on it that barely weighs 10 lb and it started sliding down the wall. The magnets are not strong at all!

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Reviewed in the United States on May 6, 2026