Amana-Goodman B1789342 Pilot Orifice

Maintain precise combustion control and pilot flame stability with the Amana-Goodman B1789342 Pilot Orifice. This OEM replacement gas orifice is engineered for high-performance Amana and Goodman gas furnaces and packaged residential heating units. Featuring a standard 7/16-inch hex head and a precision-drilled #42 orifice diameter (0.093"), this component ensures the exact volumetric gas flow required for reliable ignition and consistent sensor feedback to the thermocouple. Manufactured in the USA from durable metal, it is designed to withstand the thermal stresses of continuous pilot operation. Whether you are performing a furnace pilot assembly repair or a routine system tune-up, using genuine Goodman furnace parts like the B1789342 is critical for maintaining manifold pressure integrity and preventing nuisance lockouts or delayed ignition. Ensure your residential HVAC gas burner operates at peak efficiency by replacing worn or clogged orifices with this technician-grade hardware, specifically calibrated for natural gas or LP configurations as specified by the equipment manufacturer.

• Precision Gas Flow: The #42 orifice sizing provides exact fuel-to-air ratios for a stable pilot flame.
• OEM Compatibility: Direct-fit replacement for Goodman and Amana B1789342, ensuring zero-clearance mounting and thread accuracy.
• Heavy-Duty Construction: Built with high-grade metal to resist corrosion and carbon buildup in high-heat environments.
• Efficient Ignition: Minimizes burner delay and improves overall HVAC system reliability during cold starts.

Is the Goodman B1789342 orifice compatible with LP or Natural Gas?
This specific pilot orifice is designed for standard natural gas pressures, but compatibility depends on the specific 100% shut-off pilot assembly used in your Amana-Goodman furnace. Always verify the orifice number against the rating plate for LP conversions.

Why is my furnace pilot flame lifting or yellow?
A yellow or "lazy" flame often indicates a dirty or partially obstructed B1789342 orifice. If the flame is lifting, the gas flow control may be compromised, necessitating a replacement of the orifice to restore proper combustion.

Can I clean a clogged B1789342 orifice instead of replacing it?
HVAC technicians generally recommend replacement. Attempting to clear a gas burner orifice with a wire can slightly enlarge the opening, or "ream" it, which alters the BTU output and creates a safety hazard.

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.