The 100073342 ignitor kit includes the critical ignitor gasket and mounting screws

As a veteran-grade part

Use a multimeter to verify resistance during diagnostic checks

but the unit must never be left in operation without a functional limit switch

this actuator supports direct-mount installation on round shafts up to 1/2 inch or 3/8 inch square shafts

Lochinvar & A.O. Smith 100208638 Cable 323269-701 The 100073342 ignitor kit includesThe Lochinvar & A. O. Smith 100208638 Ribbon Cable Kit is a critical OEM replacement component designed for high efficiency hydronic systems. As a veteran technician knows, maintaining signal integrity between the integrated control board and the user interface or internal sensors is paramount for preventing nuisance fault codes. This HVAC ribbon cable is engineered to meet precise manufacturer specifications, ensuring low profile routing and secure