OEM Carrier Hot Surface Igniter 329491-401 / LH33ZS004 for Model PG9MAA060120AFKA

This is the factory OEM hot surface igniter for the Carrier PG9MAA060120AFKA gas furnace. Listed under two Carrier part numbers — 329491-401 (Gasket Ignitor) and LH33ZS004 (Hot Surface Ignitor) — this is the direct, drop-in replacement specified in Carrier service literature. The igniter functions by heating to extreme temperatures and glowing bright orange to ignite the gas burner on every call for heat. When it cracks, weakens, or fails entirely, the furnace will attempt ignition, fail to light, and go into lockout — leaving you with no heat. Replacing a failed igniter promptly restores full heating function and prevents repeated lockout cycles that stress your control board.

• OEM Part Numbers: 329491-401 | LH33ZS004 — Both are valid Carrier OEM references for this igniter assembly, including the factory gasket.
• OEM vs Generic: This OEM unit is manufactured to exact Carrier resistance, wattage, and dimensional tolerances. Off-brand igniters often run hotter or cooler than spec, causing nuisance lockouts and shortened service life — the OEM is the reliable choice.
• Install Difficulty: 2/5 — A straightforward R&R for a qualified technician. Tools needed: 1/4" nut driver, needle-nose pliers. Caution: never touch the igniter element with bare hands — skin oils cause hot spots and premature failure. Always cycle power off before servicing.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier PG9MAA060120AFKA gas furnace. Always verify your existing igniter's part number or cross-reference with your unit's wiring diagram and data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — ships today.