The physical industrial cartridge dimensions ensure compatibility with standard RK5 fuse blocks and disconnect switches

you must close the White/Red wire to the White/Blue wire

this unit supports modern Intermittent Pilot Ignition (IPI) sequences

Common Questions & Technical Insights How do I plumb the 2372-351 when used as a low pressure selector

secured away from heat-generating components like defrost heaters

Sterling J38R04578-001 Pilot Assembly 30067439-890 The physical industrial cartridge dimensionsThe Sterling J38R04578 001 Pilot Assembly is a critical Natural Gas (NG) ignition component designed for right hand installation in high efficiency unit heaters. Engineered for intermittent pilot ignition systems, this assembly features a precision 0. 18 mm orifice and a rugged spark ignition electrode to ensure dependable flame rectification. This OEM Sterling replacement part is field proven for HVAC unit heater repair, maintaining consistent pilot