Nordyne 660149R Orifice

The Nordyne 660149R LP Pilot Orifice is a critical #10 (.010") component designed for high-precision fuel regulation in liquid propane furnace systems. As a veteran-grade OEM furnace replacement part, this orifice is engineered to maintain specific pilot flame characteristics, ensuring the reliable ignition and flame stability necessary for safe combustion. The 660149R serves as the direct Nordyne 660149 replacement, offering a seamless fit for technicians performing burner rebuilds or LP conversions on Miller, Intertherm, and Nordyne gas furnaces. By delivering a concentrated gas stream, it facilitates the venturi effect required for a crisp, blue pilot flame that properly impinges on the thermocouple. For contractors diagnosing intermittent pilot dropout or failed ignition sequences in mobile home HVAC units, replacing a fouled or restricted orifice with this authentic Nortek Global HVAC part is the standard protocol to restore factory-spec heating system performance and seasonal reliability.

• Direct OEM Compatibility: Engineered as the official successor to the 660149, ensuring exact thread pitch and flow rate for Nordyne heating equipment.
• Optimized LP Ignition: The #10 (.010") precision-drilled opening regulates gas flow to prevent "lazy" yellow flames and soot buildup.
• Enhanced Flame Stability: Supports consistent thermocouple heating, preventing nuisance safety lockouts during furnace repair.
• Durable Construction: Manufactured from high-grade metal to withstand the thermal stress of continuous pilot operation in liquid propane systems.

What was the previous part number for this pilot orifice?
This part is the direct updated replacement for the Nordyne 660149. If your service manual calls for the 660149, the 660149R is the correct technical substitute.

How do I know if my LP pilot orifice needs to be replaced?
If you observe a weak, yellow flame that fails to wrap around the thermocouple, or if the pilot light won't stay lit after a thorough cleaning, the orifice may be permanently restricted or eroded. Technicians typically replace these during LP furnace maintenance to ensure zero-point calibration.

Is this orifice compatible with Natural Gas systems?
No, this is a dedicated LP gas pilot orifice. Using a propane-sized orifice on a natural gas system will result in an insufficient pilot flame and system failure. Always verify fuel type before installation.

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.