Thread Repair Inserts for Rear End

The King Racing Products Thread Repair Inserts for Rear End (Part No. 2540) is a professional-grade thread repair kit designed to restore damaged 3/8-16 inch threads in various applications, including marine environments. This set of six steel inserts provides a permanent solution to stripped or corroded threads that would otherwise require costly component replacement or machine shop work.

Heli-coil inserts work by creating a new, stronger threaded bore within the original hole. The 3/8-16 specification matches common fastener sizes found in many applications. Steel construction ensures the inserts withstand vibration, thermal cycling, and corrosive environments, making them suitable for various demanding conditions.

This repair kit is essential for those who maintain their own engines or for mechanics handling gear maintenance and rebuilds. Stripped threads typically occur from overtightening, corrosion, or repeated removal-reinstallation cycles. Rather than abandon a usable component, heli-coil repair restores factory thread strength and allows hardware to achieve proper torque specifications without risk of pullout or leakage.