PQY Spark Plug Gap Gapping Tool with 32-Blade Feeler Gauge — Black Aluminium, 10–16mm Fit, 0.04–0.88mm

PQY Universal Spark Plug Gap Gapping Tool is a compact aluminum gauge and adjuster with a 32-blade feeler set designed to set accurate spark plug gaps for most 10–16mm threaded plugs quickly and reliably.

Keep ignition performance consistent by using a single, rugged tool that measures and adjusts electrode spacing. This black aluminum gapping tool from PQY pairs a rotating clamp and screw knob with a 32-blade manganese-steel feeler gauge, spanning from 0.04mm to 0.88mm (0.0015"–0.035"). It includes a brass 0.25mm blade recommended for electronic ignition systems and fits the majority of standard 10mm, 12mm, 14mm and 16mm plugs (not 18mm, long- or short-reach types).

How does the PQY tool make setting spark plug gaps faster?

The integrated clamp holds the plug steady while the screw knob lets you open or close the electrode gap without forcing the metal. The included 32-blade feeler set gives small, incremental steps so you dial in the exact thickness you need.

• Aluminum body with matte finish for secure grip and corrosion resistance
• Screw knob for smooth, controlled adjustments
• 32 precise manganese-steel blades covering 0.04–0.88mm
• Brass 0.25mm blade for electronic ignition compatibility

Which spark plugs will this gapping tool fit?

PQY designed this tool to accommodate most standard threaded plugs in common sizes: 10mm, 12mm, 14mm and 16mm. It is not compatible with 18mm-threaded plugs or plugs classified as long-reach or short-reach, so check thread size before purchase.

• Fits most 10mm–16mm standard spark plugs
• Not suitable for 18mm, long-reach, or short-reach plugs
• Works with common automotive, motorcycle and small-engine plugs

What accuracy can I expect and any adjustment tips?

The feeler gauge offers fine increments down to 0.04mm, letting you set gaps to factory specifications. Because some electrode materials have spring-back, aim slightly lower than your target and recheck after releasing the clamp.

• Measurement range: 0.0015"–0.035" (0.04–0.88mm)
• Tip: if target is 0.44mm, try 0.42mm to account for spring-back
• Use the brass blade (0.25mm) with electronic ignition systems

Is the PQY gapper durable enough for garage and field use?

The main body is machined from aluminum with a matte texture that resists wear and gives a firm grip, while the feeler blades are high-quality manganese steel built for repeated checks. Compact and lightweight, it stows easily in a toolbox or glove compartment.

• Durable aluminum body resists corrosion and handling wear
• Manganese-steel blades maintain precise thickness over many uses
• Compact profile for easy storage—ideal for mobile repairs

Who is this for: The PQY Universal Spark Plug Gap Gapping Tool is for DIY mechanics, motorcycle and small-engine owners, tuners, and professional technicians who need a portable, accurate way to measure and set spark plug gaps. If you service common 10–16mm plugs and want repeatable results without guessing, this tool delivers precise adjustments; avoid it if your work uses 18mm or specialty long/short-reach plugs.