IMAGE COMING SOON
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
The Goodman B1401003S is a genuine OEM spark ignition assembly for the GUE040-3 gas furnace. It generates the high-voltage spark that lights the pilot or burner on each heat call. A worn or fouled ignitor causes delayed ignition, repeated ignition retries, or a complete no-heat condition. Replacing it restores fast, consistent light-off and eliminates rough starts.
The genuine OEM Goodman assembly places the electrode gap at the precise distance and angle the burner requires for a clean spark path. Generic ignitors often need field-bending to position correctly and may crack at the ceramic under repeated heat cycling. For dependable ignition and correct flame-sense positioning, OEM is the reliable choice.
Easy to Moderate — Typically one or two mounting screws and a single ignition lead. Verify the spark gap matches spec after mounting. Suitable for a confident DIYer; shut off gas and power before servicing.