OEM Replacement Kit: Replaces Case part number D103626, engineered to meet OEM specifications for performance and fit. Fits Popular Case Backhoe Models: Compatible with 580K, 580SK, 580L, 580SL, 580SM, 580SM+, 580LXT, 585G, 586G, 590, 590SL, and 590SM. Complete King Pin Set: Includes king pin, bearings, seals, thrust washers, shims, and hardware — all required components for a full replacement. Durable Construction: Manufactured from heat-treated steel for maximum wear resistance and strength under heavy front axle loads. Restores Proper Steering and Alignment: Eliminates excessive front axle play and improves steering stability, reducing downtime and uneven tire wear. This replacement King Pin Kit D103626 by Arko Tractor Parts is engineered for reliable performance on Case 580 and 590 Series backhoes. Each kit includes precision-machined components—king pin, tapered bearings, thrust washers, seals, shims, and hardware—needed to restore tight steering and eliminate front-axle play. Built from heat-treated steel, each pin and bearing surface is machined to exact OEM tolerances for long service life under demanding jobsite conditions. The complete set provides everything required for a straightforward installation, reducing downtime and maintaining proper steering alignment and front-end stability. Compatible with Case 580K, 580SK, 580L, 580SL, 580SM, 580SM+, 590SL, 590SM, 585G, and 586G models. Replaces OEM part number D103626.