• 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: Insert Qty: 5, Installed Length (inch): ½, Internal Thread Diameter (mm): 18, Pitch (mm): 1.5 • 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
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