The Sealey VS526 In-Line Ignition Spark Tester is a diagnostic tool designed to quickly identify faults in spark ignition engines by testing the high tension supply to spark plugs. This compact tester provides a simple and effective method for mechanics and technicians to verify ignition system performance without removing spark plugs. Ideal for use in automotive workshops and mobile repair services, the VS526 helps diagnose common ignition problems efficiently. The in-line design allows the tester to be connected directly between the HT lead and spark plug, making fault diagnosis straightforward even in confined engine bays. With a 100mm lead length and 55mm probe, this lightweight tester weighs just 0.07kg, making it easy to handle and store in any toolbox. The compact dimensions ensure it can be used effectively across a wide range of petrol engines, from small garden machinery to automotive applications. Features and Benefits:Quick in-line testing without removing spark plugs