Perma-Plug Kit is a professional spark plug thread repair kit that provides everything you’ll need to quickly and easily repair worn or stripped spark plug threads. Perma-Plug works in aluminum and cast iron assemblies and provides a positive locking system. Perma-Plug requires no drilling simply tap the hole with the included piloted tap tool. The Perma-Plug kit includes three insert lengths to accommodate all applications. With Perma-Plug the repaired threads are better than new and the assembly is stronger than the original! Perma-Plug Kit can be used with taper seat or gasket type spark plugs.

• Each size comes in various lengths
• Short (length same as the diameter of the bolt or screw for short thread engagement applications)
• Medium (length 1-1/2 times the diameter of the bolt or screw)-provides sufficient strength in most applications
• Long (length two times the diameter of the bolt or screw)-provides higher strength in critical applications (especially in magnesium)
• Fastserv stocks a complete line of Perma-Coil? inserts and stainless steel inserts are for standard and spark plug repair
• Perma-Coil? is made in the USA and is 100% interchangeable with helicoil
• The easiest way to permanently repair stripped spark plug port threads can be used to repair both taperseat and gasket type spark plug assemblies
• Diameter: M12
• Inside Diameter: 12mm-1.25
• Item: Perma-Plug? Spark Plug Insert
• Length: 3/4 Inch
• Material: Stainless Steel
• Thread Size: M12 x 1.25