Weil McLain 510-811-646 Replacement Kit

Ensure the reliable ignition of propane-fired systems with the Weil McLain 510-811-646 LP Gas Pilot Replacement Kit, a specialized OEM assembly precision-engineered for Weil McLain CG and CGa boilers (specifically size E38A2). This technician-grade kit is essential for troubleshooting inconsistent burner ignition or recurring pilot outages in propane applications. It features a high-performance pilot burner and a durable thermocouple designed to generate the precise millivoltage required to hold the combination gas valve open during the heating cycle.

The kit includes a factory-aligned main burner with pilot bracket, ensuring the flame carries over correctly to the main burner ports for smooth, quiet ignition. By replacing the entire boiler pilot assembly rather than individual components, you eliminate potential points of failure like cracked brackets or worn orifices, maintaining the factory-specified combustion profile for propane boiler parts. This liquid propane pilot kit is built to withstand the higher thermal stresses often associated with LP combustion in high-efficiency hydronic heating systems.

• OEM Precision Fit: Designed specifically for Weil-McLain CG/CGa series boilers to ensure drop-in compatibility and code compliance.
• Optimized LP Combustion: Includes the correct orifice and bracket alignment for LP (Propane) gas pilot replacement.
• Complete Assembly: Simplifies repairs by providing the main burner, pilot burner, and thermocouple in one Weil McLain replacement kit.
• System Reliability: Restores a stable pilot flame, preventing nuisance lockouts and ensuring consistent heat distribution.

• Will this work for natural gas boilers? No, this kit is specifically jetted and designed for liquid propane (LP). For natural gas applications, the 510-811-644 kit is required.
• Does this include the thermocouple? Yes, the kit includes a high-grade 48-inch thermocouple optimized for propane pilot duty.
• What models is this compatible with? It is designed for Weil McLain CG and CGa boilers, specifically the size E38A2 configuration.

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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.