This fuel shut off knob, model number 16243. It is compatible with a variety of Mercury outboard engines and is an essential component for your boat's ignition and starting system. Came off 2.5hp mercury 4cycle

This high-quality part is made by Mercury, a trusted brand in the boating industry. It is designed to provide reliable and efficient performance for your outboard engine. With no warranty, it is important to ensure that this fuel shut off knob is installed correctly and used with caution.