Click to enlargeMSD : 8964 : Engine Knock Alert

One of an engine's worst enemies is detonation. Detonation is caused by a number of different items such as low octane fuel, changing altitudes and too advanced timing. Sometimes however, the pinging noise may be hard to recognize due to well-insulated interiors, engine compartments or excessive road noise. The MSD Engine Knock Alert listens to what's going on in the engine for you. As detonation occurs, the warning light first shows green then turns yellow as the detonation becomes stronger.



  • 8964$275.99
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