OEM Carrier Spark Electrode Ignitor Assembly 48VL400002 for Model PY4GEAA48090AA

This OEM spark electrode ignitor assembly is the factory-specified replacement for the Carrier PY4GEAA48090AA packaged gas/electric unit. The ignitor generates the high-voltage spark that ignites the gas burner on every call for heat. When it fails, the control board typically attempts ignition one to three times before locking out the system — leaving you with a blinking fault code, a cold building, and a blower running with no heat output. Note: OEM part number 48VL400002 has been superseded by Carrier part 50HJ403022, which is the current factory-authorized direct replacement and is what ships with this listing.

• Specs: Spark electrode (2-rod) design | Ceramic body construction | Includes mounting bracket | Approx. 4.25″ L × 2.95″ W × 1.75″ H | ~0.095 lb | Factory-matched OEM fitment
• OEM vs Generic: OEM electrodes maintain precise gap geometry and ceramic insulation ratings to factory spec. Aftermarket igniters often use inferior ceramics prone to cracking under thermal cycling, leading to premature re-failure and repeat service calls.
• Install difficulty: 2/5 — Shut off gas supply and 24V control power before starting. Tools needed: 1/4″ and 5/16″ nut driver, needle-nose pliers. Disconnect the ignitor wire harness, remove the two mounting screws, swap the electrode assembly, and reconnect. Always verify spark gap is undamaged after installation.
• Warranty: 1-year OEM factory warranty against manufacturing defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed for the Carrier PY4GEAA48090AA packaged rooftop/gas-electric unit. Supersedes OEM part number 48VL400002 — the current shipping part is 50HJ403022, a direct factory-authorized drop-in replacement. Verify your unit's data plate and wiring harness connector style before ordering. Our fitment team is available to confirm compatibility before you buy.