Hydraulic filter element (Part CTT00001818), used in the hydraulic system of Kalmar Ottawa terminal tractors and yard trucks. Listed as a filter element for the in tank hydraulic filter assembly, responsible for trapping contaminants and debris in the hydraulic fluid to protect pumps, valves, and actuators. Contaminated fluid significantly increases wear on precision components like pumps and control valves, leading to reduced performance, overheating, and costly breakdowns.