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Compare spark performance before the plugs go back into the engine.
The AUTOOL SPT360 Five-Port Spark Plug Tester allows four test spark plugs to be compared against a known reference plug under the same simulated operating conditions. Its digital display and adjustable test frequency make it useful for identifying weak or inconsistent spark performance before plugs are fitted to an engine.
Designed to give technicians clearer, repeatable test information during diagnosis instead of relying on guesswork or visual checks alone.
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