COMP Cams Valve Lock 5/16in Single Groove

COMP Cams Valve Lock 5/16in Single Groove

Marsoni

M251S

$18.12

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

COMP Cams Valve Lock 5/16in Single Groovelock angle and 5 16" valve stem size is a perfect replacement lock for stock engine rebuilds. It is 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 fit

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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This product is great to have around in your car. This makes it easier for solving the problem of a flat tire. I mean! In my case! I rather use this method first instead of having to remove the tire and having to go through the spare tire dilema. For a temporary solution,this kit is perfect. And in some cases! It can serve as a permanent solution. This kit is great to have in your trunk. 👍🏻👍🏻👍🏻

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Reviewed in the United States on October 9, 2025

Verified Purchase

Mr. Jumps

West Palm Beach, US

★★★★★ 5

Gets the job done.

Got 2 flats at the same time in freezing cold weather. Jack failed, but this product didn't.

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Reviewed in the United States on April 11, 2026

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James A Karon

New York, US

★★★★★ 4

Seems fine

The kit looks good to me. Better than my old one that lasted 15 years.

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Reviewed in the United States on May 18, 2026

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JCK

Los Angeles, US

★★★★★ 5

Would buy again

No issues with this product. The oversized T handles make it a bit easier to complete the plugs. Definitely easier for those who have trouble gripping smaller items to work with or for those with larger hands. Valve stem remover was nice quality and nice to have additional valve stems. Would buy again. Wish it had a better case but I can't complain for the price.

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Reviewed in the United States on October 6, 2025

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Sharon McGlynn

San Leandro, US

★★★★★ 5

Worth the money

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Reviewed in the United States on May 9, 2026