OEM Carrier Spark Electrode Ignitor for Model PY3GNA048090NB

This OEM spark electrode ignitor assembly is the factory-specified replacement for the Carrier PY3GNA048090NB packaged rooftop unit. The spark electrode generates the high-voltage arc that ignites the gas burner during each heating cycle. When the electrode degrades, cracks, or becomes carbon-fouled, the unit will attempt ignition, fail to light, and go into a safety lockout — leaving your space without heat. Replacing the electrode with a genuine OEM assembly restores factory-reliable ignition every time.

• Specs: Spark electrode (2-rod) ignitor assembly | Factory Authorized Part | OEM Part Numbers: 48GS400168 (primary in-production) / 48VL400002 (superseded) | Designed for packaged rooftop gas-electric units
• OEM vs Generic: Genuine Carrier OEM electrodes are manufactured to exact gap, material, and wire-length specifications. Generic electrodes often ship with incorrect rod spacing or lower-grade ceramic insulators, increasing the risk of misfire, premature cracking, and repeat service calls.
• Install difficulty: 2/5 — Turn off gas supply and disconnect power before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers. Note the wire routing and connector orientation before disconnecting the old assembly. Handle the ceramic insulator carefully — avoid contact with skin oils, which can cause thermal cracking.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse.

Compatibility: Engineered for Carrier PY3GNA048090NB packaged gas-electric rooftop units. Part number 48GS400168 is the current active OEM replacement for the superseded 48VL400002. Verify your unit's model and data plate before ordering to ensure correct fitment. Have questions? Our HVAC parts specialists confirm compatibility before you buy — order with confidence and get back to heat fast.