Ignition lead

An ignition lead provides the high-voltage connection that delivers the spark between a gas appliance’s ignition module and electrode, enabling reliable pilot or electronic ignition while simplifying field replacement. As an OEM spare-category part, it uses durable high-voltage insulation and service-friendly terminations to resist heat and contaminants common in boilers and tankless water heaters. Bosch part number 7747016666 was not located on Bosch North America sites; this description is based on Bosch spare-parts listings and parts-diagram resources. (bosch-homecomfort.com)