Nissan SR20 Head Stud Kit

The OPTITORQUE TECHNOLOGIES LLC Nissan SR20 Head Stud Kit (Part Number 11080) is a chromoly cylinder head fastening solution engineered for Nissan 4-cylinder engines requiring premium clamping force and thermal stability. Unlike standard bolts, this stud kit delivers superior clamp load consistency and repeatability—critical for high-boost applications, turbo upgrades, and street performance builds where head gasket integrity directly impacts reliability.

The kit features chromoly construction with black oxide finish, providing corrosion resistance and controlled preload application. Twelve-point nuts enable precise torque specifications without the rounding risk of six-point fasteners, ensuring consistent clamping pressure across all studs. This is particularly important in SR20 applications where proper head retention prevents gasket failure, coolant leaks, and catastrophic engine damage. The standardized torque curve of a stud-and-nut design allows tuners and builders to reference established torque values with confidence, eliminating the guesswork of head bolt preload.

This stud kit is essential for SR20-powered vehicles undergoing engine rebuilds, turbocharger installations, or modifications where OEM fasteners no longer provide adequate clamping force. Whether for drift competition, road racing, or high-output street engines, the Nissan SR20 Head Stud Kit ensures repeatable assembly and long-term head seal security. The 3.25 lb kit arrives ready for installation on four-cylinder SR20 platforms.