Weil McLain 383-500-045 Assembly

The Weil McLain 383-500-045 Ignitor/Flame Rod Assembly is a precision-engineered ignition electrode kit designed specifically for the Weil-McLain Ultra Gas Boiler series. As a critical component in the combustion cycle, this dual-purpose electrode facilitates both high-voltage spark ignition and continuous flame rectification to ensure safe, efficient burner operation. This OEM kit is compatible with Ultra Series 3, 3UE, and CT gas boilers across all BTU sizes. The assembly includes the replacement ignitor, high-temperature gasket, suppressor, and necessary mounting hardware to restore reliable boiler ignition and prevent nuisance "no flame" lockouts caused by carbon fouling or ceramic degradation. For field technicians, this 383-500-045 assembly provides a direct-fit solution that meets exact manufacturer tolerances for gap spacing and signal strength, ensuring the flame sensor accurately communicates with the integrated boiler control module during every firing sequence.

• Broad Compatibility: Engineered for use in Ultra Gas Series 3, 3UE, and CT model gas-fired water boilers.
• Dual Functionality: Operates as both an ignition electrode and a flame rod for streamlined diagnostics and parts management.
• Complete Service Kit: Includes the 383-500-045 ignitor, thermal gasket, suppressor, and hardware for a professional-grade installation.
• OEM Reliability: Maintains the factory-specified flame ionization current required for safe and efficient combustion.

What boiler models use the 383-500-045 ignitor?
This aftermarket-compatible OEM kit is the standard replacement for all sizes of the Weil McLain Ultra Series 3 boilers, as well as the 3UE and CT variants.

How do I resolve a Weil McLain Ultra ignition lockout?
Persistent lockouts are often caused by a worn flame sensor. Testing for continuity or replacing the 383-500-045 assembly typically restores the proper ionization signal needed to maintain the burner circuit.

Is the gasket included in this ignition electrode kit?
Yes, the Weil-McLain 383-500-045 includes a high-grade nitrile or ceramic fiber gasket to ensure an airtight seal between the electrode and the boiler cover plate.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.