Air Conditioning Compressor Description
This Air Conditioning Compressor is indexed for Komatsu Fit for following models: Komatsu Bulldozer: D31EX-21A-M,D31PX-21A-M,D31PX-21,D31EX-21,D39PX-21A-M,D39PX-21,D37PX-21,D39EX-21,D39EX-21A-M,D37EX-21,D37PX-21A-M,D37EX-21A-M,D85A-21-E,D85P-21-EP,D85P-21-E,D85A-21B,D85A-21B-ER Komatsu Excavator: PC600-6A-KJ, PC600-6K, PC600-6KJ, PC600LC-6, PC600LC-6, PC600LC-6A, PC600LC-6A, PC600LC-6A, PC600LC-6A-KJ, PC600LC-6K, PC600LC-6KJ, PC650-5, PC650-6, PC650-6A, PC650LC-5, PC650LC-6, PC650LC-6A, PC650SE-5, PC710-5, PC710SE-5, PC750-6, PC750-6, PC750-6-AM, PC750LC-6, PC750LC-6, PC750LC-6K-01, PC750SE-6, PC750SE-6, PC750SE-6-AM, PC750SE-6K-01, PC750SE-6K-J, PC750SE-6K-LS, PC800-6, PC800-6, PC800-6-AM, PC800SE-6, PC800SE-6, PC800SE-6-AM, PW130ES-6K, PW150ES-6K, PW170ES-6K, PW170ES-6K-KA. Compare reference number 20Y-979-3111 against the label on your existing Komatsu component before ordering.
Before checkout, compare OEM part number 20Y-979-3111, connector layout, mounting position, and machine serial number. For high-value or fitment-sensitive parts, submit the fitment form below so support can verify the match.




