Motorcycle Spark Plug Tools: Wrenches and Sockets for Easy Changes

Spark plugs sit deep in the cylinder head, and a standard socket often will not fit. A proper thin-wall spark plug socket with a rubber insert grips the plug and protects the porcelain.

Thin-Wall Spark Plug Socket

Designed to fit the narrow plug well. Common sizes are 14mm, 16mm, 18mm and 21mm. The rubber insert grips the plug for easy removal and installation.

Spark Plug Wrench

A dedicated plug wrench reaches where a ratchet cannot, and its short length prevents over-torquing.

Spark Plug Gap Gauge

Before installing, check and set the gap with a wire or feeler gauge. A wrong gap causes misfires.

Bottom line: use a thin-wall plug socket, not a standard socket, to avoid a broken plug in the head.

Nachee is a professional motorcycle tools manufacturer in China, supplying spark plug sockets, wrenches and gap gauges with OEM/ODM support. See our Spark Plug Tools category.