5-4-1000 is rated at 1

Replacing the gasket during annual inspections or whenever the head is removed prevents dangerous leaks and ensures the low water cut-off maintains precise calibration

Frequent tripping typically signals restricted airflow

Direct OEM Fit: Eliminates the need for field modifications or bracket adjustments during furnace ignitor replacement

Key Benefits: Compatible with Maxitrol RV91

Resideo Q3451B1004/B Pilot Assembly 5-4-1000 is rated at 1The Resideo Q3451B1004 B Natural Gas Pilot Assembly is a high performance intermittent pilot burner designed for precise flame ignition and reliable sensing in S8600 series ignition systems. Engineering grade construction features a single rod combination spark igniter and flame sensor, which streamlines the HVAC combustion setup by utilizing one component for both sparking and monitoring. This assembly comes factory equipped with a BCR 18 orifice (0.