The Lennox 27K66 Inshot Burner is an OEM replacement part engineered for high-efficiency atmospheric combustion in residential and commercial furnaces

Does line pressure affect the accuracy of the 50 PSID measurement

Atmospheric Stability: Prevents vent clogs that cause pressure spikes or "hunting" by protecting the breather hole with specialized slots

Is the sensing element resistant to contaminants

Browning B 1 3/8 5/16 Bushing 321894-706 The Lennox 27K66 Inshot BurnerFor industrial power transmission and HVACR fan blower assemblies, the Browning B 1 3 8 5 16 serves as a high precision B Series Split Taper Bushing designed for rigorous heavy duty applications. This component features a 1 3 8" bore and is specifically machined for a 5 16" x 5 32" keyseat, ensuring a secure "Key to Key" drive where both the shaft and the hub are keyed for maximum torque transfer. The double split barrel design provides superior