Autolite AR3910X is the spark plug required for racing competition for Briggs 206 Engine
Autolite AR3910X Spark Plug – Briggs 206 Spec Plug
Autolite AR3910X is a non-resistor plug that will promise fair competition and efficient tech inspections.
Briggs & Stratton engineers dyno tested and approved the AR3910X on both new and old 206 engines under harsh conditions. Cold start testing has also proven that the plug starts the engine within 2-3 pulls as low as -15 degrees oil temperature.