Lennox 98L78 Tubing 318518-761 How do I identify if

How do I identify if this is the correct spring for my manifold pressure

Engineered with an auto reset feature (L170-40F)

this assembly allows for one-handed actuator removal

verify the harness pinout and motor voltage requirements before attempting cross-brand integration

What rod size is compatible with this kit

Lennox 98L78 Tubing 318518-761 How do I identify ifThe Lennox 98L78 Tubing is a critical OEM replacement kit used for establishing airtight connections between furnace pressure switches and intake exhaust components. This high temperature pressure switch square tubing is engineered to withstand the rigorous thermal cycles found in modern condensing gas furnaces. As a veteran grade HVAC replacement part, this kit features an approximate 3 16 inch ID (inner diameter), ensuring accurate pneumatic signals