Helicoil 5523-10 Thread Repair Kit for Spark Plugs, 10mm x 1.00 Helicoil 5523-10 Thread Repair Kit for Spark Plugs, 10mm x 1.00

The original spark plug post thread repair: Heli-Coil. These spark plug repair kits offer the highest quality and most durable repair available. The first choice of professional mechanics and engine rebuilders. Heli-Coil wire spark plug Inserts are available for any engine. Kit contains a piloted tap (no drilling necessary) an installation tool and a quantity of inserts. Heli-Coil spark plug inserts are the preferred method or repair specified by virtually all US and foreign vehicle manufacturers. 10 x 1.0, 1/2 inch reach, 6 inserts.