COMP Cams 4631-8 Poly Lock 3/8" Rocker Arm Adjusting Nut Set - High Energy Aluminum

The COMP Cams 4631-8 Poly Lock rocker arm adjusting nut set provides a secure, reliable solution for maintaining precise valve lash in high-performance engines. Designed for 3/8" rocker arm studs, these aluminum poly locks are engineered to prevent loosening under extreme vibration and temperature conditions commonly found in racing and performance applications.

Key Features:

• 3/8" thread size fits standard high-performance rocker arm studs
• High-grade aluminum construction for lightweight strength
• Poly Lock design eliminates the need for jam nuts
• Maintains consistent valve lash under extreme conditions
• Compatible with COMP Cams High Energy rocker arm systems

The poly lock style design combines the adjusting nut and locking mechanism into a single component, simplifying valve train assembly and reducing the chance of adjustment changes during operation. Ideal for street performance, drag racing, and circle track applications where valve train stability is critical.