Snowblower Ignition Key fits Snapper. Murray, Simplicity Fits Briggs and StrattoOne New Aftermarket Replacement Snowblower Ignition Safety Key for Briggs & Stratton Snow Engines This plastic ignition safety key is a direct replacement for the original equipment key used on Briggs & Stratton (Briggs and Stratton) snow blower engines. The key must be inserted into the engine's safety interlock slot to allow starting a lost or broken key will prevent the snowblower from operating. This aftermarket replacement restores full function