OEM Carrier Spark Electrode Ignitor 48VL400002 for Model PY4GEAB42090AA

This OEM spark electrode ignitor is the factory-specified replacement for the Carrier PY4GEAB42090AA packaged gas unit. The ignitor generates the high-voltage spark that ignites the burner assembly during each heating cycle. When this component fails, the control board will attempt ignition, find no flame present, and force the unit into a safety lockout — leaving you with a system that cycles but never produces heat. Replacing the ignitor with a genuine OEM part restores proper spark timing and factory-calibrated electrode gap.

• OEM Part Numbers: 48VL400002 (original) | 50HJ403022 (current OEM supersession) — both are factory-authorized for this application
• OEM vs Generic: Genuine Carrier OEM igniters are manufactured to exact electrode gap, ceramic insulator rating, and cable length specifications. Aftermarket units often deviate in gap distance and insulator quality, leading to misfires, nuisance lockouts, and premature failure.
• Install Difficulty: 2/5 — Disconnect power and shut off gas before beginning. Tools needed: 1/4" nut driver, needle-nose pliers, and a multimeter to verify spark output. Photograph the electrode orientation and cable routing before removal. Handle ceramic insulator carefully — do not touch with bare hands.
• Warranty: 1-year OEM factory warranty against manufacturing defects. Ships same business day from our warehouse when ordered by cutoff time.

Compatibility: Engineered for the Carrier PY4GEAB42090AA packaged gas/electric unit. Note that OEM part number 48VL400002 has been superseded by Carrier part number 50HJ403022 — both designations are fulfilled with the current production ignitor assembly. Verify your existing electrode style and cable connector before ordering. Our team is available to confirm fitment prior to purchase.