| Brand | Unbranded |
|---|
Check the listing for details. Spark Plug Tester, Adjustable Ignition Coil Tester System, Coil Pack Tester, Spa. Condition: New. Listed at 19.99 USD. To use, attach the alligator clip to the engine, connect the other end to the spark plug wire and check the spark length through the small window.
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