Head Stud Kit 12pt 11mm Mitsubishi 4G63

The ARP Head Stud Kit 12pt 11mm Mitsubishi 4G63 is a premium fastening solution designed for high-performance engine builders and serious motorsport enthusiasts working with 4G63 cylinder head assemblies. Unlike standard bolts, studs eliminate the risk of hole stripping and provide superior clamping force consistency, making them essential for turbocharged or heavily modified engines where reliability under extreme pressure is non-negotiable. This kit addresses the critical need for robust head fastening on one of the most popular performance engines in import racing.

Engineered from high-strength chromoly steel and finished in black oxide for corrosion resistance, the Head Stud Kit 12pt 11mm features precision-machined 12-point nuts that deliver uniform load distribution and reduced fastener stress concentration compared to 6-point alternatives. The chromoly construction provides superior tensile strength and fatigue resistance, critical properties when handling combustion pressures in turbocharged 4G63 applications. Black oxide coating protects against rust while maintaining a professional appearance in engine bay inspections.

This ARP stud kit is ideal for owners rebuilding stock or modified Mitsubishi 4G63 engines—whether for daily drivers requiring reliability or dedicated race platforms pushing high boost levels. Proper installation requires following ARP's torque specifications and application instructions to ensure optimal preload and gasket seating. The 11mm stud diameter and 12-point nut configuration are specifically engineered for 4G63 head geometry, guaranteeing correct fit and performance in both gasoline and forced-induction setups.