OEM Carrier Hot Surface Igniter Kit 120V Silicon Nitride for Model PG8MAA066110AAJA

The Carrier 331930-751 Hot Surface Igniter Replacement Kit is the factory-specified OEM solution for Carrier PG8MAA066110AAJA gas furnaces. The hot surface igniter is the component responsible for lighting the gas burners on every heating call. When it fails or cracks, the furnace control board will detect a missed ignition, trigger a lockout sequence, and leave you with no heat — typically after 3 failed ignition attempts. If your furnace starts the inducer and opens the gas valve but never lights, or goes into hard lockout shortly after startup, this igniter kit is the most common fix.

• Specs: 120V hot surface igniter | Silicon nitride element (preferred over silicon carbide for durability) | Reaches 1,800°F in under 17 seconds @ 120V | Steady-state current: 0.8–2.0A | Cold resistance: 34–64 Ohms @ 75°F | Kit includes mounting bracket, OEM connector, and high-temperature wire nuts
• OEM vs Generic: This OEM Carrier kit uses factory-matched silicon nitride geometry and connector pinout, ensuring proper flame positioning over the burner. Generic igniters frequently use mismatched brackets or undersized elements that result in repeated nuisance lockouts or premature failure within one season.
• Install difficulty: 2/5 — Turn off power and gas before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers. Do NOT touch the silicon nitride element with bare hands — skin oils cause hot spots and early fracture. Photograph all wiring before disconnecting. The included bracket and harness make this a direct drop-in replacement for LH33ZS004 in 33" tall furnace cabinets.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed for the Carrier PG8MAA066110AAJA gas furnace. Also replaces OEM part numbers LH33ZS001, LH33ZS002, LH33ZS003, LH33ZS004, LH33ZS001A, LH33ZS002A, LH33ZS003A, and SN085KX in applicable Carrier, Bryant, and Payne 33" furnace models. Verify your existing igniter voltage (120V) and cabinet height before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before every order — call or chat now.