OEM Carrier Spark Electrode Ignitor Assembly (48GS400168) for Model PY3PPA042090NA

This OEM spark electrode ignitor assembly is the factory-specified replacement part for the Carrier PY3PPA042090NA packaged gas unit. The ignitor assembly generates the high-voltage spark that ignites the burner on each heating cycle. When this component fails, the furnace will attempt ignition, fail to light, and enter a safety lockout — leaving you with no heat. Common symptoms include a clicking sound with no flame establishment, repeated short cycling, or a steady lockout fault code on the control board.

• Part Number: 48GS400168 | 2-rod spark electrode ignitor assembly | Factory-matched OEM specification | Lightweight design at approximately 0.07 lbs
• OEM vs Generic: This is a genuine Carrier OEM ignitor assembly, ensuring exact electrode gap, ceramic insulator grade, and lead wire length. Aftermarket igniters frequently have inconsistent electrode geometry that causes misfires and premature control board faults.
• Install Difficulty: 2/5 — Shut off gas supply and disconnect power before beginning. Tools needed: 1/4" nut driver, needle-nose pliers. Photograph existing wiring and electrode positioning before removal. Reconnect leads to matching terminals and verify spark gap before restoring power.
• Warranty: 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse.

Compatibility: Directly replaces the OEM spark electrode ignitor on Carrier model PY3PPA042090NA packaged gas heating/cooling units. Always verify your existing part number on the unit's data plate or wiring diagram before ordering. Our fitment team is available to confirm compatibility before you buy — same-day shipping on all in-stock orders.