OEM Carrier Spark Electrode Ignitor 48GS400168 for Model PY2PPB042090AA

This genuine OEM Carrier spark electrode ignitor (part number 48GS400168) is the factory-specified replacement for the Carrier PY2PPB042090AA packaged gas heating unit. The spark electrode ignitor initiates combustion by generating a high-voltage spark directly at the burner. When this component fails, the unit will attempt ignition, fail to light, and enter a safety lockout — leaving you with no heat and a system that won't restart without a manual reset. Replacing the ignitor with the correct OEM part restores reliable, code-compliant ignition performance.

• Part Number: 48GS400168 | Manufacturer Description: Spark Electrode Ignitor/Electrode Assembly | Factory Authorized Carrier Part
• OEM vs Generic: This is a genuine OEM Carrier component engineered to exact factory tolerances for the PY2PPB042090AA. Aftermarket electrodes frequently have mismatched gap spacing and lead wire lengths, leading to repeated ignition faults and premature failure.
• Install Difficulty: 2/5 — Shut off gas and electrical power before beginning. Tools needed: Phillips and flathead screwdrivers, needle-nose pliers, and a multimeter to verify spark output. Photograph all wire connections before disconnecting. Verify electrode gap per unit service manual before reinstalling the burner access panel.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY2PPB042090AA packaged gas/electric unit. This part is also used across multiple Carrier package unit platforms — verify your unit's data plate and existing part number before ordering. Questions about fitment? Our HVAC parts specialists confirm compatibility before your order ships.