447220-4053 20Y-979-6121 A/C Compressor, 24V 1PK 10S15C for Komatsu PC200-7 PC360-7 Excavator, AC Compressor Replacement 447220-4052 10S17A R134A

Product SpecificationsPart Numbers: 447220-4053, 20Y-979-6121, 447220-4052, 447170-9100, 247300-0510, 4436025, 300-3685Compressor Model: Denso 10S15C or 10S17A (depending on application)Voltage: 24V DC (heavy equipment electrical system)Pulley Type: 1PK single groove (one rib)Refrigerant Type: R134aCompressor Type: Swash plate with variable or fixed displacement (verify on your PC200-7)Clutch Type: Electromagnetic single-grooveMounting Type: Direct bolt-on to engine bracketOil Type: PAG 46 or ND-OIL 8 (verify compressor oil requirements)Compatible with Komatsu Excavator ModelsFor Komatsu PC200-7 (all variants)For Komatsu PC300-7 (all variants)For Komatsu PC360-7 (all variants)For Komatsu PC400-7 (all variants)For Komatsu PC450-7 (all variants)AC Compressor Function for Komatsu ExcavatorsCab Cooling: Compressor circulates R134a refrigerant through evaporator to cool operator cab24V Clutch Engagement: Electrical signal from cab controls engages compressor clutchRefrigerant Circulation: Compressor draws low-pressure gas, compresses to high pressure, sends to condenserEngine-Driven: Mounted on accessory drive, driven by 1PK serpentine belt on PC200-7 engineDehumidification: Active AC compressor also removes humidity from cab air for Komatsu excavatorWhat's IncludedOne air conditioning compressor with part numbers 447220-4053, 20Y-979-6121, 447220-4052, and 447170-9100 cross-referenced. 24V clutch and 1PK pulley are pre-assembled on the 10S15C compressor body. No mounting bolts, belt, O-rings, or refrigerant oil are included. This is an replacement for the original for Komatsu AC compressor on PC200-7, PC300-7, PC360-7, PC400-7, and PC450-7 excavators. Professional HVAC technician installation required.

• 🔋 Voltage & Pulley Specs - 447220-4053 AC compressor operates on 24V DC with a 1PK (single groove) pulley. Before ordering this 10S15C compressor for Komatsu PC200-7, verify your excavator uses 24V electrical system and 1PK belt. The 1PK pulley fits single rib serpentine belts on PC200-7 and PC360-7 models. Not for 12V systems or multi-groove pulleys.
• 📋 Part Number Verification - 20Y-979-6121 AC compressor replaces for Komatsu numbers 20Y-979-6121, 447220-4053, 447220-4052, and 447170-9100. Also cross-references to 247300-0510. This 24V 1PK compressor fits 10S15C and 10S17A Denso-type applications. Verify your old compressor matches one of these numbers before ordering.
• 🚜 For Komatsu Excavator Fitment - 447220-4052 AC compressor fits for Komatsu PC200-7, PC300-7, PC360-7, PC400-7, and PC450-7 excavators. The 24V 1PK 10S15C compressor mounts on the engine accessory drive. Compatible with both standard and long-arm variants of PC200-7. Not for PC200-6, PC200-8 (different compressor), or PC50/PC60 mini-excavators.
• ❄️ Cabin Cooling Function - 20Y-979-6121 air conditioning compressor circulates R134a refrigerant through the PC200-7 cab system. When the 24V clutch engages, the 10S15C compressor draws in low-pressure gas, compresses it, and discharges high-pressure gas to the condenser.
• 🔧 Professional Installation Required - Installing 447220-4053 24V compressor requires recovering refrigerant from your PC360-7 system first. The AC compressor must be properly oil-balanced before installation. After mounting this 1PK 10S15C compressor for Komatsu PC200-7, the system needs evacuation and recharging by certified HVAC technician.