Stud Girdle Nut - 7/16 Intake Long

The DART Stud Girdle Nut – 7/16 Intake Long is a precision fastener designed for high-performance engine builders and mechanics working on serious cylinder head modifications. This component serves as a critical retention element in intake manifold stud applications, particularly when upgrading to longer stud configurations on competition and street performance engines. Whether you're assembling a race engine or upgrading an existing build, this long-pattern girdle nut ensures secure, repeatable clamping force on intake stud hardware.

Manufactured by DART, a trusted name in cylinder head and engine component engineering, this 7/16-inch stud girdle nut is engineered to withstand the vibration and thermal cycling inherent to high-rpm operation. The long-pattern design accommodates extended stud applications common in custom engine builds where intake manifold geometry has been modified or where reinforced clamping is required. The compact yet durable construction—weighing just 0.16 lbs—minimizes parasitic weight while delivering the holding power needed for reliable intake sealing under boost, high compression, or aggressive valve timing scenarios.

This fastener is essential for engine builders transitioning to stud-style intake mounting systems, particularly on small-block and big-block platforms where traditional bolt patterns may be insufficient for sustained performance. Mechanics and enthusiasts rebuilding high-output engines will appreciate the precision engineering that ensures consistent torque retention and eliminates the creep associated with conventional bolted assemblies. Installation is straightforward: thread onto the extended intake stud and torque to manufacturer specification; always verify compatibility with your specific cylinder head and intake manifold combination before final assembly.