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COMP Cams Valve Locks 3/8in Four Groove

Marsoni M251S
Sale price$37.91
Pay 4 payments of $9.48 a month.Shop Pay
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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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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4.1 ★★★★★
Based on 61 reviews
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ab4u
Massapequa, US
★★★★★ 5
Excellent 3M Headlight Restoration Kit!
Size: 1 Kit, Size: 1 Kit
Better than expected results. This 3M Kit needs no drill; all done by hand. Check out their videos on YouTube; follow the easy instructions. This $10 3M Kit, an hour and a half of my time, saved me over $300! What a serious savings! Thank you 3M for another fantastic product!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
A
Verified Purchase
Angela Allen
Whiting, US
★★★★★ 5
Affordable and it works !
Size: 1 Kit, Size: 1 Kit
Works great price is decent and easy to use
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
S
Verified Purchase
SoCalVet
Carnegie, US
★★★★★ 5
Clean foggy headlights with ease.
Item Package Quantity: 1
I was very impressed with the results. Easy and fast to use. Really cleaned up the foggy appearance. I will definitely use it again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
R
Verified Purchase
Red-Dog
Charlottesville, US
★★★★★ 5
Great product
Item Package Quantity: 1
This product works awesome. Fast and easy. Customer service is to work with as well. Yes, I recommend this product. Head lights look better and visibility greatly improved.
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Reviewed in the United States on January 29, 2026
R
Verified Purchase
Rick Rivera
Waukegan, US
★★★★★ 4
Immediate results
Item Package Quantity: 1
Very easy to apply. Impressive immediate results. However not yet sure if the shine will last. It’s only been 48 hours but so far it’s great and definitely worth the money. I give it 4 stars for now. If the shine lasts it deserves 5 stars.
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Reviewed in the United States on March 22, 2026

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