the 4074EGR is the standard crank arm assembly utilized for the M7415 series

the system should be isolated and partially drained to prevent leaks during the swap

Automated Operation: The auto reset mechanism ensures the system resumes normal operation once temperatures descend to 170°F

and 125 psi rated units

Maxon 18110 Spark Plug 30067439-890 the 4074EGR is the standardThe Maxon 18110 Spark Plug is a heavy duty 10mm burner spark plug ignitor engineered for high demand industrial combustion systems. Designed primarily for Maxon burners and Eclipse AH burners, this self grounding electrode provides consistent, high energy ignition in gas fired HVAC equipment, including industrial furnaces, boilers, and process heaters. Featuring a precise 10mm x 1mm thread size and a 2. 72 inch total length, the 18110 ensures optimal