Engine Block Thread Repair Kit for Automotive Use, 88 131 Pcs, M5 M6 M8 M10 M12

Engine Block Thread Repair Kit for Automotive Use is a reliable, precision-crafted solution for restoring damaged or stripped threads in engine blocks, cylinder heads, and other metal housings. Available in two comprehensive configurations—the 88-piece set (M6, M8, M10) and the 131-piece set (M5, M6, M8, M10, M12)—this kit equips you with the right combination of taps, drills, and hardened thread inserts to return metal threads to factory-like strength. The inserts are hardened to HRC60-63, delivering strong, accurate threads that withstand vibration and torque in demanding automotive environments. Designed for metal applications, it’s ideal for engines, motorcycles, bicycles, and various automotive maintenance tasks, including repairing seats, door locks, fenders, and interior fittings where threaded holes have worn out.

The kit is built to simplify repairs without removing major assemblies. It includes dedicated tools to load and install inserts, align fasteners, and break off the tag for a clean, flush finish. With the right parts at hand, you can save time, reduce costs, and extend the life of critical components—from daily drivers to project vehicles.

Benefits & Tips

• 2 practical use cases: restore stripped engine block threads to their original strength for oil pans or exhaust components; repair threaded holes in metal fixtures like seats, door locks, or fenders, keeping your vehicle’s interior and exterior hardware secure.
• 3-step installation mindset: drill out damaged thread with the correctly sized drill bit, re-drill and tap the hole, load the coil insert into the applicator, screw the coil into the casting, and break off the tag with the lug breaking tool—resulting in a renewed, dependable thread.
• Maintenance tip: store the kit in its case to protect precision taps, drills, and inserts, ensuring longevity and readiness for the next repair job.

Product specifications

88 pcs specification

• Type: M6 / M8 / M10
• Hardness: HRC60-63
• Package List:
  • 3x Taps: M6X1.0X10.8mm, M8X1.25X10.8mm, M10X1.5X13.5mm
  • 3x Drills: 6.3mm, 8.4mm, 10.4mm
  • 75x Thread inserts: 6×1.0, 8×1.25, 10×1.5 (25 of each)
  • 3x Breaking pin tools
  • 1x T-Wrench

131 pcs specification

• Type: M5 / M6 / M8 / M10 / M12
• Hardness: HRC60-63
• Package List:
  • 5x Twist Drill Bits
  • 5x Installation Tools
  • 5x Break Pin Tools
  • 1x Hex key
  • 25x Thread Inserts M5 x 0.8 x 6.7mm
  • 25x Thread Inserts M6 x 1.0 x 8.0mm
  • 25x Thread Inserts M8 x 1.25 x 10.8mm
  • 25x Thread Inserts M10 x 1.5 x 13.5mm
  • 10x Thread Inserts M12 x 1.75 x 16.3mm
  • 1x Storage Case

Use Steps

1. Drill out damaged thread using correctly sized drill bit(supplied).
2. Tap re-drilled hole using tap supplied.
3. Load coiled insert into applicator.
4. Screw coil into casting.
5. Using lug breaking tool, break off tag on insert.
6. Thread is repaired and ready to use.

Package includes:

• 1 set x 88pcs Thread Repair Tool Kit
• or 1 set x 131pcs Thread Repair Tool Kit (model chosen accordingly)

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

At intercyprus.com since 2002 — trusted for quality and reliability.

Note: This product is suitable for metal components and intended for automotive applications, including engines, motorcycles, and bicycles maintenance and repairs. Origin: Mainland China.