Glow Plug Thread Repair Kit 33pc Cylinder Head Re-Tap Set

A 33-piece glow plug thread repair kit for repairing damaged threads in cylinder heads without replacing the head itself. Built for re-tapping and insert fitting work, it includes the key components needed to restore common glow plug thread sizes accurately.

Used for engine servicing, vehicle maintenance and workshop repair work where worn, stripped or damaged glow plug threads need putting right. Suitable for mechanics, garages and experienced DIY users working on diesel engines, especially when carrying out cylinder head repairs or dealing with difficult glow plug removal damage. It is a practical option when a clean, correctly aligned thread repair is needed to get the engine back into service.

The kit includes taps, insert drivers, tap guide pins, an insert guide rod with knurled head, and replacement thread inserts in a range of common sizes. Its tap guide system is intended to help keep alignment correct during the repair, which is especially useful when working directly on the head and trying to avoid cross-threading during insert installation. With multiple thread options covered, it helps reduce the need to source separate repair parts for common glow plug sizes and is useful for regular workshop use.

Glow plug thread repair kit specifications

• Contents: 33-piece set with taps, insert drivers, tap guide pins, insert guide rod and replacement thread inserts.
• Taps: Includes M8 x 1mm, M10 x 1mm, M10 x 1.25mm, M12 x 1mm, M12 x 1.25mm and M14 x 1.25mm.
• Insert drivers: Supplied for M8 x 1.0, M10 x 1.0, M10 x 1.25 and M12 x 1.25 repairs.
• Guide system: Tap guide pins in 8 x 45, 10 x 45 and 12 x 45 sizes, plus a knurled head insert guide rod for controlled fitting.
• Covers: Replacement thread inserts for M8 x 1mm, M10 x 1mm, M10 x 1.25mm and M12 x 1.25mm glow plug thread repairs.

A practical re-thread kit for cylinder head repairs in the garage or workshop.