This Navien Ignitor Kit is a crucial component designed for the NFB-175/200 series of boilers. The kit includes an ignitor, which is responsible for initiating the combustion process in these heating systems. It works by generating a spark or heat to ignite the fuel-air mixture within the boiler, thus starting the heating process. The kit also contains all necessary parts and components required for a complete and proper installation. Made with high-quality materials, this Navien Ignitor Kit ensures durability and reliable performance, contributing to the overall efficiency and longevity of your NFB-175/200 series boiler system.