Description
Product Overview
The Comp Cams 648-16 Valve Lock Set is engineered for drivers who demand dependable engine protection. Constructed from hardened alloy steel, each lock delivers a 7‑degree lock angle that resists tampering while maintaining a low profile on the valve stem. The set includes 16 single‑groove locks sized for 11/32″ valve stems, finished in black for a discreet appearance. Designed with a key‑unlock feature, the locks can be quickly released with the supplied key, allowing easy maintenance without compromising security.
![[Product front view showing all components]](https://www.pelviro.store/wp-content/uploads/2026/06/090d678264d04034a448478a8cde42b3.jpg)
Usage
Ideal for a wide range of vehicles, this valve lock set is perfect for daily commuters, performance enthusiasts, and off‑road adventurers. Whether parked in a crowded lot or stored in a remote location, the lock deters theft and unauthorized adjustments. Its hand‑control operation and app‑compatible control method make it suitable for both professional mechanics and DIY owners seeking straightforward installation and reliable protection.
Why Choose Us
Comp Cams is a trusted name in automotive performance, and this valve lock set reflects the brand’s commitment to quality and durability. Each lock undergoes precision machining to ensure a perfect fit and long‑lasting performance. The unfinished black coating resists corrosion, while the key‑unlock system provides a balance of security and convenience. Backed by a responsive customer support team, you can count on assistance for installation questions or part replacements.
Key Features
- Hardened alloy steel construction for maximum strength and resistance to wear.
- 7‑degree lock angle delivers a secure hold while allowing easy key‑unlock release.
- Fits 11/32″ valve stems, covering a broad range of engine types.
- Simple hand‑control installation saves time and eliminates the need for special tools.
- Dedicated customer support ensures help is available for any installation or fit‑ment issue.
FAQ
Can these locks be used on any engine?
They are designed for valve stems with a 11/32″ diameter, which covers most standard automotive engines. Verify your valve stem size before purchase.
How do I unlock the valves when I need service?
Use the supplied key to release the lock. The key‑unlock mechanism is designed for quick access without damaging the lock or valve stem.
Is the black finish prone to rust?
The unfinished black coating provides corrosion resistance suitable for most environments. For extreme conditions, consider applying an additional protective spray.
Do I need special tools to install the locks?
No special tools are required. The locks are installed by hand, aligning the single groove with the valve stem and securing with the key.
What warranty does Comp Cams offer?
Comp Cams provides a limited warranty against manufacturing defects. Contact customer service for claim details and support.





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