Vintage 6-Cylinder Spark Plug Ignition Tester – C M Products / Constance Marine

The 6-Cylinder Ignition Tester is a vintage marine diagnostic tool manufactured by C M Products / Constance Marine. This unit is listed as used condition. It is designed to test ignition output across up to six spark plug leads at the same time. Therefore, it provides a practical method for diagnosing ignition performance on multi-cylinder marine engines.

The 6-Cylinder Ignition Tester features six integrated high-tension leads connected to a central testing panel. Additionally, it allows technicians to observe ignition performance without repeatedly removing individual test leads. This supports faster troubleshooting and workshop efficiency.

This listing includes one complete six-cylinder ignition tester assembly as shown in the photographs. Available information identifies the C M Products / Constance Marine tester only. However, no unsupported engine compatibility details are included.

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