ARP Pro Series Rocker Arm Studs

ARP Pro Series rocker arm studs are high-strength engine rocker arm studs (also called rocker studs or valve train studs). They replace factory rocker arm bolts or studs in performance and racing engines. They give the valvetrain a stable mounting point under high spring pressure and high RPM.

Key Features:

• Premium alloy construction: ARP builds these studs from high-tensile steel alloys made for demanding valvetrain loads.
• Rolled threads: Threads are rolled after heat treatment, which improves fatigue resistance and thread strength.
• Precision machining: Tight tolerances help give consistent rocker arm geometry and reliable fastener clamping.
• Upgrade over stock hardware: They resist stud pull-out, flex and loosening in engines with aggressive cams, heavy-duty valve springs and high-lift rockers.
• Made in the USA: ARP manufactures its fasteners in its own facility under strict quality control.

These studs suit street performance, drag racing, circle track and other high-output engine builds. Each part number in the Pro Series line is engineered for a specific engine application. Choose the correct child item for your engine and rocker arm setup.