Automotive Spark Plug Tester Plug-In Engine Ignition Test Light

• Universal Engine Compatibility: This spark plug tester works on most small and large internal/external engines, including cars, trucks, lawn mowers, marine engines, and motorcycles. A must-have tool for personal garages, professional mechanic shops, and auto repair businesses.
• Quick 30-Second Diagnosis: Simply connect the tester between your spark plug and wire. If the engine generates a spark, the tester bulb lights up instantly. This quick visual feedback helps you identify faulty spark plugs and bad circuits in about 30 seconds.
• Durable High-Temp Construction: Made from premium rubber, metal, high-temperature resistant wire, and eco-friendly acetate plastic. Performs reliably in both high and low temperature environments without compromising accuracy or durability.
• Long-Lasting Bulb Design: Features a 2.28-inch metal interface, 4.44-inch lamp housing, and 6.53-inch cable. The internal bulb lasts for years and can be easily replaced through the transparent housing when needed.

What's in the box
1 x Diagnostic Test Tool