【OEM DESIGN】 16913 for 16900/16910 CoolTech ID (Plus) part features OE fit, form and function to ensure ease of installation and proper performance. 【QUICK CHANGE AIR FILTER】The A/C recycling filter drier , a simple installation process, reduces le downtime and increases efficiency. 【SUGGESTION】Air filter incorporates a red dye that indicates when replacement of the filter is necessary. As soon as red spots or discoloration begin to appear anywhere on the white outside diameter of the filter element,The filter must be replaced. 【WIDE COMPATIBILITY】 The 16913 Identifier Replacement Filter is designed to fit models like AC1234-4, AC1234-4SL, AC1234-4-230, AC1234-6, AC1234-9, 16900/16910 CoolTech ID (Plus), 16990/16995 Refrigerant Identifier, and R-1234y systems. 【100% SATISFACTION SERVICE】Before purchasing, lightly confirm that the air conditioning recovery drier is suitable for your charging station to avoid incompatibility problems. If you have any questions or dissatisfaction, please email us and we will help you solve it perfectly - 36 months warranty & 24 hours service. 2-Pack OEM 16913 Refrigerant Identifier Replacement Air Filters,Compatible with Robinair 16900/16910 CoolTech ID (Plus)