Spark plug thread repair kit M8x1.0

This kit allows you to repair a damaged or stripped spark plug thread on a classic vehicle, with an M8x1.0 thread pitch. It comes with four helical inserts of different lengths: 9.50 mm, 11.50 mm, 12.70 mm and 19 mm, to suit various cylinder head configurations. This type of repair avoids the costly replacement of the cylinder head and restores a solid and durable thread. A practical solution for restoration and maintenance of vintage engines.