SKU: COM4601-16
UPC: 036584390343
MPN: 4601-16
The Hi-Tech Polylock 3/8 For Alm-Ss-Pro-Mag Rockers is a precision rocker arm lock designed for serious engine builders and performance enthusiasts who demand reliability in high-RPM applications. This component is essential for protecting your valve geometry and ensuring engine longevity during demanding conditions.
The 3/8-inch polylock design utilizes a polymer insert that grips the rocker arm stud, providing a secure fastening geometry to prevent rocker arm walk. Unlike traditional lock nuts that can loosen under valvetrain vibration, this polylock maintains consistent clamping force across temperature swings and repeated cycling.
These polylocks are ideal for anyone installing or refreshing rocker arms on small-block or big-block Chevrolet, Ford, or other American performance platforms. Installation is straightforward—simply thread onto the rocker arm stud for a secure fit.
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