Flywheel Bolt Kit - Mitsubishi 2.0L 4G63 EVO

The ARP Flywheel Bolt Kit for Mitsubishi 2.0L 4G63 EVO is a purpose-built fastener set engineered for high-load engine applications requiring maximum clamping force and fatigue resistance. This set of seven bolts features 12-point heads, chromoly construction with black oxide finish, and precise 12mm x 1.25 thread specifications with 0.600-inch length geometry. ARP bolts are designed to replace OEM flywheel fasteners in applications where engine torque, vibration, and thermal cycling demand superior fastening integrity.

Chromoly construction delivers higher tensile strength and fatigue resistance compared to standard steel fasteners, critical for Mitsubishi EVO platforms where aggressive engine builds and high RPM operation are routine. The 12-point head design provides superior grip engagement with socket tools, reducing cam-out risk during installation and removal—a practical advantage when working under engine bay constraints. Black oxide coating offers corrosion resistance and a professional finish while maintaining dimensional consistency. These bolts are engineered to OEM torque specifications for the 4G63, ensuring proper clamping load distribution across the flywheel-to-crankshaft interface.

This kit is essential for engine builders, performance shops, and EVO enthusiasts performing flywheel replacement, transmission service, or engine rebuilds. Any time the flywheel is removed from a 4G63 engine—whether for clutch work, balancing, or crankshaft service—using fresh fasteners of verified grade eliminates risk of fastener failure under load. OEM fasteners can lose preload over thermal cycles and are often non-reusable after removal. The complete seven-piece set ensures you have all fasteners needed without mixing old and new components.