Toledo Adjustable Spark Plug Tester – Fixed Jaw

The Toledo Adjustable Spark Plug Tester (Part Number 302165) is a professional diagnostic tool engineered to quickly accurately identify ignition system faults. Designed with a fixed jaw configuration, this tester is essential for troubleshooting non-start conditions and verifying spark strength without the need for complex equipment. It operates by simulating the compression load a spark plug experiences within the engine cylinder, providing a realistic assessment of the ignition coil and overall system performance.

This unit allows mechanics to visually check the quality of the spark, helping to distinguish between weak, intermittent, or non-existent electrical output. With an adjustable testing range of 2kV to 4kV, it is versatile enough to handle various ignition systems found in modern and older vehicles. Its robust construction ensures durability in a busy workshop environment, making it a reliable choice for daily use. whether you are a professional technician or a serious DIYer, the Toledo 302165 offers a straightforward and effective solution for maintaining peak engine performance and diagnosing starting issues.