Spark Plug Thread Repair Kit M8 x 1.0 HSS Tap 4 Inserts

A spark plug thread repair kit for restoring damaged M8 x 1.0 spark plug threads without replacing the full component. It includes an HSS steel tap and four thread inserts, giving you the parts needed for accurate thread repair work.

Used for vehicle maintenance, engine servicing and workshop repairs where spark plug threads have worn, stripped or been damaged. Suitable for mechanics and experienced DIY users who need to tidy and restore threads so a spark plug can be fitted correctly again. It is especially useful when dealing with awkward repair jobs where damaged threads would otherwise slow down servicing or lead to a more involved repair.

The kit is built around an M8 x 1.0 HSS steel tap with a 16mm hex drive, making it suitable for controlled thread cutting and repair work. Four inserts are included in different lengths: 9.5mm, 11.1mm, 12.7mm and 19.1mm, helping you match the repair more closely to the application. Having multiple insert sizes in one kit is useful for regular maintenance work and helps cover common repair situations without needing separate insert packs. The supplied parts also make it easier to keep a dedicated spark plug thread repair kit ready in the garage or workshop for repeat use.

Spark plug thread repair kit specifications

• Thread size: M8 x 1.0 spark plug thread repair kit.
• Tap material: HSS steel tap for thread restoration work.
• Drive: Tap features a 16mm hex drive.
• Contents: Includes 4 thread inserts for repair jobs.
• Insert lengths: 9.5mm, 11.1mm, 12.7mm and 19.1mm.

A practical thread repair insert kit for regular servicing and maintenance work.