The Trane SFCAP40D5440R (also listed as HCKY400D050R440318Z6) is a dual run capacitor rated at 40 + 5 MFD with a 440V tolerance and 50/60Hz frequency. Designed for consistent and efficient motor operation, this round capacitor supports both the compressor and fan motor in HVAC systems, ensuring reliable start-up and continuous performance. It is a direct-fit replacement in many Trane units and other compatible systems. Key Features Dual capacitor with 40 + 5 microfarad (MFD) ratings 440 Volt AC rating for high-load applications Round canister design fits standard HVAC capacitor mounts Designed for 50/60Hz operation OEM-compatible with Trane and other systems requiring similar specs Specifications Part Numbers: SFCAP40D5440R, HCKY400D050R440318Z6, 202206101A Capacitance: 40 + 5 MFD Voltage Rating: 440V AC Frequency: 50/60Hz Shape: Round Type: Run capacitor (dual) Compatible Models 4YCC4030A1070AC. Why Choose This Item Restore full performance to your HVAC unit with the Trane SFCAP40D5440R. Manufactured to OEM specifications, it delivers dependable motor support and long-term durability. Whether you're performing routine maintenance or urgent repair, this capacitor ensures your fan and compressor motors run at peak efficiency ? helping to reduce wear, prevent failures, and extend system life.