it is standard practice to replace the pilot orifice entirely

this part provides the essential microamp signal to the integrated furnace control board

Key Benefits Molded Porous Core: High-performance desiccant blend provides superior acid and water capacity compared to loose-fill beads

it is not polarity sensitive

By drawing air through factory-drilled air inlet holes and directing it into the detector's sensing chamber

Honeywell 4074ENJ Position Kit it is standard practice toHoneywell 4074ENJ Minimum Position Kit, Includes Two Stop Pins, 3 8" Shaft Adapter, Two Minimum Position Screws and Nuts, Used with ML6161, ML6174, ML7161 and ML7174 Series 4074ENJ is identical to 4074ENJ U