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3 Valve Mustang Spark Plugs Gapping

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Factory Three-Valve plugs are typically gapped at 0.055-inch. Saul sets the gap on our new Brisk racing plugs at a boost-friendlier 0.030-inch.
Mustang Spark Plugs - Brisk Three-Valve Plugs

 Factory Three-Valve plugs are typically gapped at 0.055-inch. Saul sets the gap on our new Brisk racing plugs at a boost-friendlier 0.030-inch.  View Related Article

 

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