GREAT NECK SAW OEMTOOLS 25643 – FIX‑A‑THREAD® REPAIR KIT M14‑1.25

The OEMTOOLS 25643 Fix‑A‑Thread® Repair Kit (Metric M14‑1.25) is specifically engineered to repair stripped spark plug threads in cylinder heads using non‑taper seat spark plugs. This professional‑grade kit restores damaged threads back to their original size and strength by installing non‑locking helical inserts made from high‑quality 18‑8 stainless steel, producing a permanent, wear‑resistant repair with improved holding power. It is widely used in automotive, motorcycle, aviation, and general mechanical service work.

Product Specifications

• Manufacturer: Great Neck Saw
• Brand: OEMTOOLS
• Model Number: 25643
• Product Type: Fix‑A‑Thread® spark plug thread repair kit
• Thread Size: M14 × 1.25
• Thread Standard: Metric
• Intended Use: Non‑taper seat spark plug thread repair
• Insert Type: Helical, non‑locking
• Insert Material: 18‑8 stainless steel wire
• Included Components:
  • High‑grade tap
  • Job‑specific installation and tang break‑off tool
  • (3) stainless steel thread inserts
• Repair Materials: Alloys, steel, plastics
• Function: Restores stripped spark plug threads to original size and strength
• Packaging Type: Carded retail package
• Warranty: OEMTOOLS limited lifetime
• Safety: California Prop 65 warning applies

Key Features

• Spark plug–specific design: Engineered for repairing damaged threads on non‑taper seat spark plug applications
• Permanent repair: Stainless steel helical inserts create a durable, wear‑resistant internal thread that often exceeds original holding strength
• Improved load distribution: Diamond‑shaped wire cross‑section increases thread contact area for enhanced retention
• Complete professional kit: Includes the correct tap, installation tool, and break‑off tool for precise, repeatable repairs