Computer Controller Panel 2108100108 for Atlas Copco Screw Air Compressor Parts A023279 For CAT 416E 422E 428D For CAT 416E 422E 428D 428E 3054C EngineDetails: 4 pcs piston 4 pcs piston ring 4 pcs piston pin 8 pcs piston clip 4 pcs Connecting Rod bushing 4 pcs Cylinder Liner 4 pcs intake valve 4 pcs exhaust valve 4 pcs intake valve guide 4 pcs exhaust valve guide 4 pcs intake valve seat 4 pcs exhaust valve seat 5 pair main rod bearing 4 pair con rod bearing 4 pcs thrust plate 1 set full gasket kit 1753ES 12E6UC4B1S1CC43 Fit for Atlas Copco Air Compressor Parts Computer Controller Panel 2108100108 for Atlas Copco Screw Air Compressor Parts