Carrier KR51BG915 Blower Pulley 318973-401 The base MA40-7040 model does

The base MA40-7040 model does not include internal switches

this electronically commutated motor utilizes an integrated control module to regulate torque and speed

The Amana-Goodman 2821302S Heat Exchanger is an essential OEM replacement component designed to restore the heating efficiency and safety of your HVAC system

NEMA 2/IP54 rated housing provides protection for the internal drive gears in mechanical room conditions

Carrier KR51BG915 Blower Pulley 318973-401 The base MA40-7040 model doesThe Carrier KR51BG915 Blower Pulley is a precision engineered fixed bore drive component designed for specific integration within Carrier, Bryant, and Payne commercial HVAC air handlers. This heavy duty single groove pulley is manufactured to exact OEM tolerances, ensuring optimal belt alignment and consistent torque transmission across the drive assembly. When performing field replacements or preventative maintenance on belt drive blowers, selecting