the R45663-001 is the direct replacement for degraded or brittle leads that cause ignition failure

Constructed from galvanized steel with a low-leakage gasket design

Utilizing genuine Weil-McLain burner parts ensures that the equipment operates within original factory parameters for long-term reliability in demanding hydronic applications

Whether you are addressing a noisy blower or a failed hub

this block provides clearly defined termination points for 24V interfaces

Lennox 45H98 Crankcase Heater 320788-703 the R45663-001 is the directThe Lennox 45H98 Crankcase Heater is a critical OEM replacement part designed to maintain optimal oil viscosity within the compressor sump during off cycles. By providing consistent thermostatic heat, this 120V 240V compatible heater prevents refrigerant migration and condensation, which are leading causes of slugging and mechanical failure at startup. This wrap around style heater is specifically engineered for a high tolerance fit on various Lennox