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and Luxaire models like the 2970A766
Look for physical bulging
Optimized for Vertical Mounting: Perfectly aligned for standard vertical wallbox or surface-mount configurations
Exact OEM Replacement: Ensures full compatibility with York heating and cooling parts
York S1-025-39887-000 Spark Ignitor and Luxaire models like theThe York S1 025 39887 000 Spark Ignitor is a critical OEM replacement component designed for precise furnace ignition sequences in high efficiency residential and light commercial units. Engineered for reliable HVAC spark ignition, this assembly features a durable ceramic insulator and a robust electrode designed to withstand high temperature combustion environments. The integrated 28 inch lead wire allows for flexible routing within the burner