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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I usually would buy XL size but in this case I bought XXL thinking since it's cotton it might shrink. But when I tried the T-shirt it was too small. My older XL sized T-shirt has 2 1/2" larger total shoulder width and 3" wider body width. See attached pictures. Length was also a bit shorter by about 1/2". I will to return it.

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Reviewed in the United States on April 15, 2026

Verified Purchase

Pattie B

Louisville, US

★★★★★ 2

Does not match the size

Size: 3X-Large, Color: Blue

Way smaller than the size indicated. Very thin material, almost see- thru.

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Reviewed in the United States on December 5, 2025