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This genuine OEM Goodman flame sensor is a direct-fit replacement for the WFD195090S4CAB gas furnace. The flame sensor is a critical safety and operation component: it confirms the presence of a flame during the ignition sequence so the control board can keep the gas valve open. A dirty, cracked, or worn sensor is the most common cause of short-cycling, delayed ignition, and "no heat" lockout faults.
Our OEM option is the exact Goodman-engineered sensor with factory-matched rod length, mounting bracket, and terminal — guaranteed fit and flame-signal performance. A Generic equivalent offers a budget-friendly alternative that meets the same electrical spec but may require minor bracket adjustment. Both restore proper flame sensing; choose OEM when you want exact factory tolerances.
Easy (1/5). Remove one mounting screw, unplug the wire lead, and swap. Light sanding of a reused sensor is common maintenance. Always shut off gas and power before servicing. Typical install time: 10–15 minutes.