Description
Overview:
The Sealey Spark Plug Thread Chaser 14 & 18mm (part no. VS525) is a dual-size maintenance tool for renewing spark plug threads in cylinder heads. Made from robust steel for workshop use, it cleans corrosion and carbon deposits and re-aligns minor cross-threading so spark plugs seat correctly and torque accurately. Suitable for automotive engines as well as small-engine equipment found in garden and construction machinery, it helps prevent damaged plug holes and misfires caused by poor thread engagement. The tool is driven with a 21 mm hex, allowing easy use with a standard 21 mm spark plug socket. Designed to restore existing threads rather than cut new ones, it is a dependable choice for routine servicing on cars, vans, motorcycles, generators, lawn mowers, and similar equipment.
Key Features:
- Dual-ended tool covers 14 mm and 18 mm spark plug threads for wide compatibility
- Restores thread form by removing corrosion and baked-on carbon deposits
- Dresses minor cross-threading to improve plug start and seating
- 21 mm hex drive works with a regular 21 mm spark plug socket for simple use
- Sturdy steel construction for long service life in workshop conditions
- Helps achieve correct plug torque and sealing, supporting reliable ignition
- Compact design reaches plug recesses commonly found on small engines
- Suitable for routine maintenance to prevent costly head repairs
- Smooth-cutting chaser profile cleans threads without aggressive material removal
- Versatile for automotive, motorcycle, and outdoor power equipment service
Typical Applications:
Cleaning and restoring spark plug threads during services on cars, vans, motorcycles, lawn mowers, chainsaws, strimmers, generators, pressure washers, and compact construction equipment. Ideal after long storage where corrosion forms, after plug removal on older engines, or when a plug has started slightly off-thread. Supports reliable plug installation during tune-ups and rebuilds.
Also known as:
Spark plug thread cleaner, spark plug thread restorer, plug port chaser, cylinder head thread chaser, spark plug hole cleaner, spark plug thread repair tool, spark plug rethreader, spark plug thread tap (chaser type), plug thread maintenance tool.
Product Specifications
| L&S Part No. | SEAVS525 |
|---|---|
| Manufacturer | Sealey |
| OEM No. | VS525 |
| Unit of Sale | 1 |
| Size | Height: 110mm x Width: 110mm x Depth: 25mm |
