9K8943 CYLINDER GROUP AIR OVER HYD 3Y0666 7K8497 FOR !!!FREE SHIPPING! CASTLE INN & SUITES Updated 2022 Prices & Hotel Reviews (Anaheim, CA). One New Aftermarket Replacement Air Over Hydraulic Brake Cylinder Group Fits Caterpillar (Fits CAT) Wheel Loaders and Skidders This aftermarket replacement 9K8943 Cylinder Group is an air over hydraulic (air hydraulic) brake cylinder assembly used in the rear brake lines and cylinder system on Fits Caterpillar wheel loaders and skidders. It converts air pressure into hydraulic braking force to engage the service brakes, providing consistent and controlled deceleration. Compatible Models Fits Caterpillar Wheel Loaders: 920 (Serial No. 41J4622 to 41J10199 inclusive see serial number note below), 930 Fits Caterpillar Skidders: 528, 528B, 530B Serial Number Restriction Fits CAT 920: This part applies to Fits CAT 920 units Serial No. 41J4622 through 41J10199 inclusive only. Units Serial No. 41J10200 and up use a different cylinder group (2V2672). Verify your serial number before ordering. Replaces Part Number(s): 9K8943, 9K8943 A, 3Y0666, 7K8497, BRL40 0032 New aftermarket replacement part not remanufactured, not used.