Description

Spark plug gap tool accuracy is essential for smooth starts, strong ignition, and reliable engine performance. This universal spark plug gap tool with 32-blade steel feeler gauge is designed to work with most 10 mm, 12 mm, 14 mm, and 16 mm standard spark plugs (not suitable for 18 mm threads).

The main body of the spark plug gap tool is made from high-quality aluminum with a matte texture, giving you a solid, comfortable grip. Simply place the spark plug into the gapper, choose your desired feeler gauge blade, and turn the adjustment knob slowly until the electrode reaches the correct gap thickness. This makes setting and checking gaps quick, repeatable, and precise.

A helpful tip when using this spark plug gap tool: some electrodes can spring back slightly after adjustment. For example, if your target gap is 0.44 mm, set it to about 0.42 mm first so it settles right at 0.44 mm.

The included 32-blade feeler gauge is made from durable manganese steel, with a measurement range from 0.0015 in (0.04 mm) to 0.035 in (0.88 mm), plus a 0.010 in (0.25 mm) brass blade for electronic ignitions. Please note, this tool is not for long- or short-reach spark plugs, so confirm fitment before purchase.