MMU3 Selector front plate

The MMU3 Selector front plate by Prusa Research is an essential spare part designed for use with the Prusa Multi-Material Upgrade 3 (MMU3). This high-precision component is specifically developed for FDM 3D printers in the Original Prusa i3 MK3S/S+ and MK4 series. Serving as the front plate of the selector unit, it plays a central role in filament management by enabling the selective feeding of up to five different filaments into the extruder. This capability significantly simplifies the printing of complex, multi-color models and supports using soluble materials. Manufactured from premium, durable materials, the plate ensures precise filament guidance and minimizes the risk of clogs or mis-ejections, thereby maintaining consistent print quality. The installation process is straightforward thanks to the intelligent design, allowing users with intermediate technical skills to get their printer back up and running quickly. This component targets advanced makers, professional users, and anyone looking to maximize the potential of their Prusa printer and execute multi-material prints with the highest reliability.