CTA Tools Spark Plug Thread Repair Kit – M18 X 1.5 (98181)
Pro-Thread Kits offer a cost-effective method of repairing and strengthening threads in various materials such as cast iron, steel, aluminum, and other metals and plastics
Effective for automotive repair, spark plug ports, outdoor power equipment, motorcycle repairs, farm equipment, and more!
Easy to install, just DRILL, TAP, INSERT, SNAP!
Pro-Thread inserts provide a permanent wear resistant internal thread
Stainless steel inserts resist the effects of temperature and corrosion
Wire inserts help to compensate for the thread and pitch angle errors
Repaired threads are generally stronger than the original parent material thread
Metric M18 x 1.5 x ½” MF Spark Plug Thread Repair Kit:
Installed Length (inch): ½
Internal Thread Diameter (mm): 18
Included components:
18 x 1.5mm STI Pilot Nose HSS Tap
Hand Installation Tool
18 x 1.50mm x 1/2" MF Spark Plug Wire Thread Insert
CTA Insert Replacements: Part #98187
Product identification
- Brand: CTA Tools
- Model / MPN: 98181


