Old Part number is 5006536
Fits all Titan and SprayTech Electric Hi-Boy Models including 440s, 640s, 740s, 840s, 1140s, SprayTech Hi-Boy models 2155, 2255, 2305, 2355, 2405, 2455, 2505, 2555, GPX and Titan Gas units.
**Please note that this filter fits the upright units, also known as a Hi-boy. It will not fit the lo-boy or skid units except for the 840 and 1140 units.***