180216 Suburban Bruner Orifice #49

SF-42 42F NT-40 P-40 

OEM #49 LP Gas Orifice for 40k–42k BTU Suburban Furnaces

The Suburban 180216 Burner Orifice meters the precise LP gas flow into the burner tube on high‑output Suburban furnaces. Sized at #49, this orifice is calibrated for the BTU requirements of the 40k–42k BTU furnace class, ensuring proper ignition, stable flame shape, and clean combustion. Using the correct orifice is essential for maintaining furnace efficiency and preventing yellow flames, soot buildup, or ignition failures.

This is the OEM replacement for the NT‑40, SF‑42/SF‑42F, and P‑40 furnace platforms.

Key Features

• OEM Suburban #49 burner orifice

• Provides correct gas flow for 40k–42k BTU furnace platforms

• Ensures proper flame shape, ignition reliability, and combustion stability

• Brass construction for clean, consistent metering

• Direct‑fit replacement for factory burner assemblies

When Technicians Replace This Orifice

• Yellow, lazy, or unstable flame

• Soot buildup in burner or exhaust

• Furnace failing to ignite or lighting inconsistently

• Incorrect BTU output or weak heating

• Orifice clogged with debris, oil, or contamination

Compatibility

SF‑Series Furnaces:

• SF‑42

• SF‑42F

NT‑Series Furnaces:

• NT‑40

P‑Series Furnaces:

• P‑40

Fits OEM Suburban burner assemblies requiring a #49 orifice.