Product Details: Maximize your fleet's uptime and minimize costly repairs with the Lisle 19380 Spark Tester. This indispensable diagnostic tool revolutionizes ignition system troubleshooting. Unlike traditional methods that often require puncturing wires, potentially causing further damage, the Lisle 19380 offers a non-destructive approach. Simply place the grooved end over the plug wire while the engine runs. A flashing bulb instantly indicates spark presence or absence. This straightforward design minimizes diagnostic time, allowing your mechanics to quickly identify and resolve issues, getting vehicles back on the road faster. The rugged construction ensures the Lisle 19380 withstands the rigors of daily fleet maintenance. Its compact size makes it easy to store and transport, ideal for mobile maintenance teams. By investing in the Lisle 19380, you're investing in efficient fleet management, translating to reduced downtime, lower repair bills, and improved overall operational efficiency. Stop wasting time and money on inefficient diagnostic methods. Choose the Lisle 19380 Spark Tester the smart solution for maintaining a healthy and productive fleet.