MLY Car Spark Plug Ignition Tester Pen, High Voltage Wire Cylinder Wire Spark Plug Detection Tool, Non-Disassembly No Damage with High-Brightness Bulb at End Groove, Universal for Cars (Multicolored)

Product Item: Spark Plug Tester (high-voltage wire/cylinder wire detection)✅ Non-disassembly, no damage to vehicle✅ High-brightness bulb for clear readings✅ Durable ABS material, safe insulation✅ Compact pen clip, easy to carry🌟 Features ● Material: ABS (hard, wear-resistant, non-deformable) ● Design: Grooved end (better wire contact), pen clip (portable) ● Size: 4.84"/123mm (compact for storage) ● Indicator: High-brightness LED (visible in dim areas) ● Safety: Stable insulation (prevents electric shock)🚗 Function ◆ Tests spark plugs, high-voltage wires, ignition coils ◆ No disassembly/ wire piercing—protects vehicle ◆ Clear bulb flashes to confirm signal transmission ◆ Easy to operate (suitable for pros & DIY users) ◆ Portable for on-the-go maintenance (mechanics/ personal use)

• Efficient Spark Detection: This spark plug tester quickly checks spark plugs, high-voltage wires, and ignition coils—no wire piercing needed. The high-brightness bulb gives clear light indicators, so you can instantly tell if the spark plug works properly, making engine fault diagnosis fast for mechanics or personal maintenance.
• Non-Disassembly & Grooved End Design: This car spark tester lets you test ignition systems and circuit breakers without taking parts apart. Its grooved end boosts contact with wires, while the bright bulb makes results easy to see—even in dim garages—so you get reliable readings without damaging your vehicle.
• Durable ABS Material & Safe Insulation: The spark plug ignition tester has a 4.84"/123mm length and ABS outer shell—hard, wear-resistant, and non-deformable. It offers stable insulation to prevent shocks, with a transparent LED light that stays visible, so you can use it safely in any environment.
• Simple Operation Steps: For easy use, start the engine and place the tester’s grooved end on the spark plug wire. If the bulb flashes, the wire is transmitting the spark plug signal—no complex tools needed, perfect for both pros and DIY car owners to diagnose issues quickly.
• Compact Pen Clip & Portable: This spark tester has a pen clip design—mini and lightweight, so you can clip it to your pocket or tool bag for on-the-go use. Great for mechanics or personal car maintenance, it provides convenient, reliable fault checks to save time and boost efficiency.