The Atlas 3633454 is a genuine hydraulic stick cylinder, designated HA 40X 650 R 45, designed for various Atlas excavators including models 1304, 1404, 1504, 1604, 1704, 1804, 1904, 2004, 2204, 2304, and 2404. This essential component features an 80mm bore, a 40mm piston rod diameter, and a 650mm stroke, ensuring precise and powerful operation for the excavator's stick function. Weighing approximately 50 kg, it is built to OEM specifications for durability and performance in demanding construction environments.