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Spark Plug

Various spark plug thread repair kits are available for thread diameters of 10mm, 12mm, 14mm and 18mm.


Listed below is the most popular kit.

For other sizes or kits with different length inserts please contact us.


It is recommended that when repairing the thread on spark plug ports that you remove the head.

If you do not it is essential that you protect the engine from the ingress of chips and swarth generated by the tapping process.


STI Pilot Nose Taps are used to repair damaged spark plug threads and do not require the drilling of a pilot hole. These taps use the existing thread as a guide in tapping a straight hole.


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