| Brand | Lisle |
|---|---|
| Manufacturer Part Number | 20610 |
Check the listing for details. Lisle 20610 Inline Spark Tester, Double Ended Straight Boot and 90 Degree Boot. Condition: New. Listed at 20.56 USD. Lisle 20610 is an inline spark tester used to provide a visual check of ignition spark without removing the spark plug. It connects between the spark plug and the plug wire, and with the engine running it flashes a mirror image of the ignition spark to help diagnose ignition system issues.