The Speedmaster PCE255.1007 is a complete set of 7/16" polylock rocker arm nuts engineered to work in conjunction with a stud girdle setup. Polylocks provide a reliable locking mechanism that helps maintain consistent valve train geometry and prevents rocker arm nuts from backing off under high-RPM or high-lift camshaft conditions.
Designed as a direct replacement or upgrade for use with stud girdle applications, this set delivers the secure valvetrain retention serious engine builders demand. Sold as a set for a convenient, matched installation on your next engine build or rebuild project.
MPNPCE255.1007
UPC840136522553
