Trane BUS1909 Bushing 321894-709 note that the wiring configuration

note that the wiring configuration has been updated

Rugged Construction: The UL94-5V flammability rating allows for safe installation in return air plenums and high-traffic commercial environments

System Protection: Effectively prevents compressor operation during low-charge conditions to avoid oil slugging and terminal failure

the Carrier P031-7171 provides a reliable drop-in solution for various HVAC split systems and packaged units

Trane BUS1909 Bushing 321894-709 note that the wiring configurationThe Trane BUS1909 is a 1 inch Type H Split Taper Bushing designed for precision mounting of sheaves, pulleys, and sprockets in commercial HVACR drive systems. This split taper bushing features a high strength design that provides 360 degree clamping force, ensuring a secure, concentric fit on the shaft to minimize vibration and run out. As a genuine OEM Trane replacement part (also referenced as BUS01909), it is engineered to handle high torque