COMP Cams Valve Locks 5/16in Single Groove

COMP Cams Valve Locks 5/16in Single Groove

Marsoni

M251S

$36.76

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

COMP Cams Valve Locks 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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Your COMP Cams Valve Locks 5/16in Single Groove orders ship within 1-2 business days.

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Fast: 2-3 business days
Express: 1-2 business days

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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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The product was in great shape when delivered. Even though the package was thin as it is the delivery was made with card and all was well with product. The instructions were good to use and change in my car. Also it showed the make of vehicle so I won’t be confused at all. Overall it was a great buy

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Reviewed in the United States on May 13, 2026

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Amazon Customer

Louisville, US

★★★★★ 5

Fits my Accord perfectly!

Size: 8.8" x 9.3" x 1.2"

Fits my 2008 Accord perfectly and feels just as sturdy as the OEM I used before, which cost nearly twice as much. Plus, it includes activated carbon, something the OEM didn’t have.

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Reviewed in the United States on May 15, 2026

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Susan F. Montville

Omaha, US

★★★★★ 5

Easy to do it yourself and save!

Size: 8.8" x 9.3" x 1.2"

One place wanted $85 to replace this! Another wanted $50! I ordered this for $10, watched a YouTube video and did it myself! Super easy!

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Reviewed in the United States on May 10, 2026

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