OEM Part Number: 9003542. 7" Flexible Air Tyre Valve Extension Adaptor Motorcycle Car Tire Stem Extender u. Efficient ignition and stable combustion: The optimized ignition system and stable combustion design ensure that the water heater can quickly and reliably ignite the gas, and maintain a stable combustion state, improve the hot water heating efficiency, reduce energy consumption, and bring users a more comfortable and energy-saving hot water use experience.