OEM Carrier Spark Electrode Ignitor 48GS400168 for Model PY3PEA048090NB

This is the factory OEM spark electrode ignitor assembly (part number 48GS400168) for the Carrier PY3PEA048090NB gas packaged unit. The spark electrode ignitor is responsible for initiating ignition of the gas burner on every heating cycle. When this component fails, the control board will attempt ignition, detect no flame, and trigger a safety lockout — leaving you with a system that attempts to start, fails repeatedly, and ultimately shuts down with a fault code. A failed ignitor is one of the most common causes of no-heat calls in packaged gas units.

• Part Number: 48GS400168 | OEM Carrier Factory Authorized Part | Spark Electrode / Ignitor Assembly | Direct factory-spec replacement — no modifications required
• OEM vs Generic: This is a genuine Carrier OEM ignitor, factory-matched to the PY3PEA048090NB burner assembly geometry and electrode gap. Generic igniters often have incorrect electrode spacing or incompatible bracket geometry, leading to misfire or premature failure.
• Install Difficulty: 2/5 — Shut off gas supply and 24V control power before starting. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers. Disconnect ignitor wire harness, remove mounting screws, swap electrode assembly, and reconnect. Always confirm gas is off and the unit is in lockout reset before testing.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY3PEA048090NB 4-ton 90,000 BTU packaged gas/electric unit. Verify your existing ignitor part number on the unit data plate or wiring diagram before ordering. Not sure it fits? Our HVAC parts specialists will confirm fitment before you buy — order today and ship today.