37B/260 - Spark Gap

This is a complex item, used in the ignition circuit between the starter magneto or booster coil to protect the latter from overload damage. Used on all Spitfires, Hurricanes and all 2nd WW fighters and bombers that use a starting magneto or a booster coil. A very rare item today and often left out. When you find your booster coil or starter magneto is damaged beyond use, and you have not one of these, then you will now know why!

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