AUTOOL SPT105 Spark Plug Tester Tool Adjustable Spark Tester

The AUTOOL SPT105 Spark Plug Tester Tool is a dual-hole spark plug tester for comparing two spark plugs under simulated engine working conditions. It supports adjustable simulated RPM from 0 to 6000 rpm, adjustable test hole height for longer spark plug ends, and a transparent safety cover for safer visual spark observation during 12V vehicle spark plug checks. Compare SPT101, SPT105, SPT301, and SPT360 before choosing the right tester for test hole quantity, simulated RPM range, adjustable hole height, LCD display, long spark plug support, and workshop testing volume. SPT105 is built for quick spark plug comparison, simulated RPM testing, long spark plug compatibility, and safer observation through a transparent protective cover. SPT105 is simple to operate: place the spark plug, close the protective cover, connect power, adjust the working frequency, and observe the spark status through the cover. Use this compact summary to confirm SPT105 capability, model positioning, and key purchase checks before ordering. Key features • RPM Simulation: The tester simulates engine conditions up to 6000 rpm to show spark behavior beyond a static check. • Dual Plug Test: Two-hole testing makes side-by-side spark plug comparison faster during diagnosis. • Adjustable Height: The adjustable test hole height is described to suit plugs with longer ends on more vehicle types. • Product: AUTOOL SPT105 Spark Plug Tester Tool • Working Principle: Digital sensing • Test Holes: 2 test holes for simultaneous spark plug comparison