The 3/8 Hi-Tech Polylocks are precision rocker arm nuts designed for use in various engine builds, particularly where valvetrain stability is essential. These fasteners are suitable for both serious automotive enthusiasts and professional engine builders, providing a solution to prevent rocker arm nut loosening caused by vibration and thermal cycling.
Manufactured from hardened steel with a black oxide finish, these nuts offer corrosion resistance and durability. Each nut features a 3/8-24 thread size and incorporates a polylock insert technology that creates friction without degrading under repeated fastening cycles, ensuring consistent clamping force across various engine operating temperatures.
Engine builders and performance technicians can rely on these nuts for various applications, including street and strip builds. Installation is straightforward, requiring only a 9/16-inch wrench or socket, making them reusable across multiple engine builds.
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