11-Piece Spark Plug Thread Repair Kit, M10×1.0 Tap and 10 Thread Inserts, Cylinder Head Rethreading Tool Set for Automotive Engines (Cars & Trucks)

This Spark Plug Thread Repair Kit is designed for M10*1.0 repairs and supports both tapered seat and gasket seat spark plug assemblies. Stainless steel inserts plus an included installation tool help you restore damaged spark plug threads with a compact, maintenance-friendly solution.Package Includes: 10 × stainless steel thread inserts ( 0.50×0.51 in and 0.67×0.51 in); 1 × installation tool (tail tube).

• M10 x 1.0 Exact Fit: Designed for M10*1.0 spark plug thread repair and cylinder head rethreading work. Includes two insert sizes—12.7×13 mm (0.50×0.51 in) and 17×13 mm (0.67×0.51 in)—to help you choose the sleeve that matches your repair needs.
• Tapered Seat & Gasket Seat Use: Made for repairing spark plug assemblies that use tapered seat and gasket seat designs. Helps rebuild a usable threaded interface in the cylinder head while keeping compatibility with these common seating types.
• Stainless Steel Thread Inserts: Inserts are stainless steel for strong, stable performance during installation and spark plug service. Built to resist deformation in routine maintenance, making it a practical option for ongoing plug hole thread repair tasks.
• Complete 11-Piece Set: Includes 10 thread inserts plus 1 installation tool (tail tube) for a ready-to-use spark plug thread repair kit. A compact set to keep in your garage or toolbox when plug hole threads are damaged and need an insert solution.
• Straightforward Installation Process: After the spark plug hole is properly prepared and cleaned, use the included installation tool to place the thread insert, then proceed with spark plug installation. Suitable for tune-ups, maintenance, and general engine upkeep where a small repair kit is preferred.