COMP Cams Valve Lock 3/8in Four Groove

Marsoni

M251S

$18.12

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

COMP Cams Valve Lock 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

Easy Shipping

Quick Dispatch:

Your COMP Cams Valve Lock 3/8in Four Groove orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your COMP Cams Valve Lock 3/8in Four Groove ships.

Need Help?
Questions about COMP Cams Valve Lock 3/8in Four Groove, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for COMP Cams Valve Lock 3/8in Four Groove in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

Last December we bought our first new car in 21 years and the first thing I did is stock up on cabin and engine air filters. I've got nothing against dealership OEM parts and pieces but what I do have an issue with is the prices. Luckily, we all have a bit of control over access to OEM quality parts and pieces at significantly more reasonable prices via Amazon. This filter and it's matching cabin filter are excellent in value and take less than 5 minutes to replace. Compare that to paying the hourly rate at your dealer plus the dealership retail price and you'll do what I did and stock up on these two filters. Definitely recommended.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on September 25, 2025

Verified Purchase

Little Oak

Alexandria, US

★★★★★ 4

It will fit a 2022 Subaru Outback

Size: (Pack of 1)

Higher quality than OEM item fit and arrived on time. This was for a 2023 Subaru Outback

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on September 15, 2025

Verified Purchase

Bob P

Phoenix, US

★★★★★ 5

High quality

Size: (Pack of 1)

Looks a lot nicer than the one that came with my Subaru Outback (OEM). Performs the same or better.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on March 20, 2026

Verified Purchase

Leon Broneshter

Houston, US

★★★★★ 5

Make sure you get the right part.

Perfect fit. Helped my fuel efficiency on my long trip from California to Tennessee. High quality materials that are easily maintained. Easily replaceable on a 2024 Honda Accord Hybrid Sport (2.0L)

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on October 2, 2025

Verified Purchase

Mike M.

Lowell, US

★★★★★ 5

Perfect fit Honda accord

Perfect fit. +2 mpg on a Honda hybrid. Excellent

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 1, 2026