Spark Plug Opening Thread Chaser 14 & 18mm - GearWrench

The GearWrench 730 Spark Plug Opening Thread Chaser is an essential tool for automotive and industrial technicians, engineered to efficiently clean and restore damaged spark plug threads. This specialized chaser supports both 14mm and 18mm plug openings, offering a reliable solution for salvaging lightly damaged or contaminated threads without requiring cylinder head removal, thereby saving significant time and labor.

Key Features

• Dual-Ended Design: Services the two most common spark plug sizes, 14mm and 18mm, accommodating a wide range of domestic and import gasoline engines.
• Thread Restoration: Reforms lightly damaged, cross-threaded, or contaminated spark plug openings to help restore proper thread engagement and prevent further damage.
• Maintained Sealing Integrity: Aids in ensuring spark plugs seat squarely and seal correctly, supporting stable compression and minimizing the risk of misfires or blow-by.
• Professional-Grade Construction: Built with a durable tool body, engineered for repeated use in demanding shop environments on both aluminum and cast-iron cylinder heads.

Applications

The GearWrench 730, also known as the KD-730, is typically utilized during routine tune-ups, spark plug replacements, and cylinder head service. It is particularly effective when spark plug threads exhibit resistance, minor galling, rust, or carbon buildup. Common applications include passenger cars, light trucks, fleet vehicles, and small industrial engines equipped with 14mm or 18mm spark plugs. By cleaning and reforming threads after removing an old plug and before installing a new one, technicians can often avoid more extensive and costly cylinder head repairs.

Specifications

• Manufacturer: GearWrench
• Model Number: 730 (KD-730)
• Thread Sizes: 14mm and 18mm
• Weight: 0.3 lb