Stenner Phenolic Gear [Series 45/100 w/Spacer 26RPM] (MP6N040) is a replacement gear component for compatible Stenner chemical feeder pumps. The gear helps support the mechanical drive operation that allows the pump to move treatment solution at the intended feed rate. It is a practical repair part for service situations involving worn drive components, inconsistent pump movement, or maintenance of the feed rate mechanism. Stenner peristaltic pumps are commonly used in pool, spa, and water treatment systems where controlled chemical dosing is important. Replacing worn internal drive parts helps preserve pump reliability and can extend the usable life of the feeder. This phenolic gear includes the spacer noted in the product description and is intended for matching Stenner Series 45/100 applications. Replacement phenolic gear for compatible Stenner Series 45/100 pumps Supports mechanical drive operation in chemical feeder systems 26RPM specification helps match the required pump configuration Useful for repair, maintenance, or feed rate restoration work Part number MP6N040 provides accurate identification for ordering