Crane's screw-in rocker arm studs eliminate the need for press-in studs that pull out in high-rpm and high valve spring pressure applications. Made from high-quality hardened alloy steel and finished in durable black oxide, they're precision-machined and heat-treated for reliable operation with today's advanced valvetrains. Specially machined threads and shoulder areas ensure firm and positive rocker arm support with minimal movement or distortion.
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