OEM Carrier Hot Surface Igniter (Spark Electrode) for Model PY3PEA042090AB — Part 48GS400168

This OEM spark electrode igniter is the factory-specified replacement part for the Carrier PY3PEA042090AB packaged gas/electric unit. The hot surface igniter is the critical component responsible for lighting the burner on every heating cycle. When the control board calls for heat, the igniter heats to over 1,800°F to ignite the gas flowing through the burners. A failed igniter is one of the most common causes of a no-heat call — typical symptoms include the furnace attempting ignition and then going into lockout mode, the system cycling without a flame being established, or visible cracking and breakage on the igniter element itself.

• Specs: Spark electrode / hot surface igniter | Factory OEM part number 48GS400168 | Direct drop-in replacement | Engineered to exact Carrier factory tolerances for reliable cold-weather starts
• OEM vs Generic: This is a genuine OEM Carrier igniter — not an aftermarket substitute. OEM igniters are manufactured to precise resistance and thermal specifications, ensuring consistent ignition and longer service life. Generic igniters can vary in element resistance, leading to premature failure or unreliable ignition performance.
• Install Difficulty: 2/5 — A straightforward DIY replacement for experienced homeowners or technicians. Tools needed: 1/4" nut driver or socket set, needle-nose pliers, and work gloves. Important: Never touch the igniter element with bare hands — skin oils cause hot spots and dramatically shorten element life. Always disconnect power at the breaker before servicing.
• Warranty & Shipping: Backed by a 1-year OEM factory warranty against defects. In-stock units ship same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered specifically for the Carrier PY3PEA042090AB packaged unit. Always verify the OEM part number on your existing igniter or equipment data plate before ordering to confirm fitment. If you have any questions about compatibility, our HVAC parts specialists are available to verify fitment before you buy — no guesswork required.