OEM Carrier Hot Surface Igniter Kit (LH33ZS004 + 323901-701) for PG9MAA048100AAKA

This OEM hot surface igniter kit is the factory-specified replacement for the Carrier PG9MAA048100AAKA gas furnace. The hot surface igniter (LH33ZS004) is a silicon carbide element that glows to ignition temperature within seconds of a call for heat, lighting the gas burners reliably every cycle. The included igniter bracket and gasket assembly (323901-701) ensures a factory-correct, airtight mounting—eliminating flue gas bypass that aftermarket bracket solutions often miss. When the igniter fails, your furnace will enter a safety lockout after one or more failed ignition attempts, leaving you with no heat and a blinking fault code on the control board.

• Includes: LH33ZS004 Hot Surface Ignitor + 323901-701 Ignitor Bracket/Gasket Assembly | Factory OEM kit — both components sourced directly from Carrier
• OEM vs Generic: OEM silicon carbide igniters are manufactured to exact resistance and wattage tolerances. Generic igniters frequently run out of spec, causing nuisance lockouts and premature element failure—often within one heating season.
• Install difficulty: 2/5 — Turn off power and gas before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers. Never touch the igniter element with bare hands—skin oils cause hot spots and early failure. Use gloves or handle by wire harness only. Swap bracket gasket at the same time to ensure a proper seal.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed by cutoff time ship same business day from our warehouse.

Compatibility: Designed for the Carrier PG9MAA048100AAKA gas furnace. Also cross-references with other Carrier, Bryant, and Payne models that specify part number LH33ZS004—verify your unit's data plate and service literature before ordering. Not sure if this fits? Our HVAC parts specialists confirm fitment before you buy.