York Parts S1-02535305000 Gas Furnace Spark IgniterGas Furnace Spark Igniter from York Parts, model S1 02535305000, is a trusted replacement designed for use with gas furnaces. This item Spark Igniter delivers fast, reliable sparks to ignite burners, helping your heating system return to full operation quickly. Built as a durable, OEM style component, it fits standard gas furnace ignition assemblies and is used on gas furnaces across various York systems. As a genuine replacement, this York Parts S1

and a universal bonnet that can be threaded or direct-coupled for flexible installation

Gasketed housing and seal for airtight performance

as well as air compressors and industrial water control systems

Manufactured by Resideo under the Honeywell Home banner

This essential repair kit delivers OEM-quality components designed for reliable humidifier maintenance in both residential and commercial systems

Direct-fit replacement for AO Smith water heaters

This AO Smith part is built to strict standards and backed by the reputation of the brand

Its compact inline design makes it easy to retrofit into existing layouts without sacrificing performance or space

it helps prevent leaks

OEM-style replacement part for standard furnace ignition systems

delivering consistent flame signals and precise monitoring of burner status

Designed for AO Smith equipment