This Shurflo by Pentair Upper Assembly Replacement fits the 4558 series High Flow Systems. It also fits the 4648 series Pro BaitMaster II 4.0 heavy duty livewell and washdown pumps.
It’s a genuine OEM part, giving a targeted rebuild of the pump’s upper section rather than replacing the whole pump body. Check the exact model number against the compatibility list before ordering.
This kind of rebuild part keeps an otherwise sound pump in service. The upper assembly is typically the section that wears first on a heavily used livewell or washdown pump. Shop more pump parts and accessories.
- Fits 4558 series High Flow Systems
- Also fits 4648 series Pro BaitMaster II pumps
- Genuine OEM upper assembly
- Rebuilds the pump section that wears first
