Description
Product Overview
The Comp Cams 623-16 valve lock is engineered for high‑performance engines that demand precise valve control. Crafted from lightweight yet sturdy aluminum, this lock resists corrosion and heat distortion, ensuring long‑term durability. With dimensions of 3.2 x 4 x 0.1 inches and a weight of just 1.41 ounces, it offers a compact solution without sacrificing strength. The part is manufactured in the United States, reflecting Comp Cams’ commitment to quality craftsmanship and strict tolerances. It fits specific vehicle models, providing a direct bolt‑on experience that eliminates the need for custom modifications.
Usage
Designed for performance enthusiasts, the 623-16 valve lock excels in racing, track days, and high‑output street builds. It secures valve stems during aggressive camshaft profiles, high RPM operation, and extreme temperature cycles. Installers range from seasoned race shop technicians to DIY hobbyists; the vehicle‑specific fit ensures the lock aligns perfectly with factory bolt patterns, reducing installation time. Ideal for engines that experience frequent valve adjustments, this component helps maintain valve timing accuracy and prevents costly valve bounce.

Why Choose Us
Comp Cams has a legacy of over 60 years in camshaft and valve technology, and the 623-16 valve lock upholds that reputation. Each unit undergoes rigorous testing for torque retention, thermal stability, and corrosion resistance. The aluminum alloy is selected for its high strength‑to‑weight ratio, delivering a secure lock without adding unnecessary mass to the valve train. Our U.S. manufacturing ensures consistent quality control, and the product carries a non‑discontinued status, guaranteeing ongoing support and availability.
Key Features
- Precision‑machined aluminum body for lightweight strength
- Vehicle‑specific fit eliminates custom drilling or tapping
- Corrosion‑resistant finish suitable for high‑temperature environments
- Easy bolt‑on installation with standard torque specifications
- Backed by Comp Cams’ extensive performance engineering heritage
FAQ
Is the 623-16 valve lock compatible with all engine types?
No, the 623-16 is vehicle‑specific. Verify your engine model against the fit list provided by Comp Cams before purchase.
Can I install the valve lock myself?
Yes, the lock is designed for straightforward bolt‑on installation using basic hand tools. Follow the included torque specifications for optimal performance.
What maintenance is required after installation?
Periodically inspect the lock for signs of loosening or corrosion, especially after high‑heat runs. Re‑torque as recommended in the service manual.
Does the aluminum construction affect heat dissipation?
The aluminum alloy offers excellent thermal conductivity, helping to dissipate heat quickly and maintain dimensional stability under extreme conditions.
Is there a warranty on this product?
Comp Cams provides a limited warranty covering manufacturing defects. Refer to the warranty card included with the product for full details.





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