the part must be replaced to restore furnace operation

simplifying wiring by connecting directly to the compressor’s start

Simplified Installation: Standard three-position switch with a 19mm pluggable footprint for efficient field replacement

Built to handle 460/575V electrical configurations

This DF9 model kit is the designated direct replacement for legacy part numbers 100170510 and TST1294

Tecumseh K146-21 Capacitor 30067439-890 the part must be replacedThe Tecumseh K146 21 Capacitor is a high duty 145 175 MFD 110V start capacitor engineered to meet the rigorous demands of commercial and residential refrigeration systems. For technicians servicing HVAC compressors or condensing units, this OEM replacement part provides the critical high torque electrical boost required to initiate the start cycle under load. Rated at 110 125V, it is optimized for motor start applications where consistent discharge