Model Compatibility: Fits compressor models R90I, R110I, R90N, and R110N as a direct replacement oil separator. Part Number: Replaces part number AP01 23545841 for use in specified compressor models. Functionality: Restores oil separation function when installed in compatible R90I, R110I, R90N, or R110N compressors. Design Specification: Matches the physical and functional specifications of the AP01 23545841 oil separator used in listed models. Installation Purpose: Designed to be installed in place of the existing oil separator in compatible R90I, R110I, R90N, and R110N compressors., Manufacturer: CMXdhrKFT