Shurflo 9480501 Upper Assembly Replacement for 4648 Pro BaitMaster II & 4558 High Flow Pumps

The Shurflo 9480501 upper assembly is a genuine OEM replacement component designed specifically for Shurflo 4648 Series Pro BaitMaster II 4.0 heavy-duty livewell/washdown pumps and 4558 Series high flow systems. This complete upper housing assembly restores pump performance and extends the service life of your marine pumping system.

Compatible Pump Models:

• Shurflo Pro BaitMaster II 4.0 12V (4648-153-A07, 4648-153-E07)
• Shurflo Pro BaitMaster II 4.0 24V (4648-163-A07, 4648-163-E07)
• Shurflo High Flow System 12V (4558-153-E75, 4258-153-A09, 4258-153-E09)
• Shurflo High Flow System 24V (4558-163-E75, 4258-163-A09, 4258-163-E09)

Key Features:

• Complete upper housing assembly for quick replacement
• Includes pressure switch and internal check valve components
• Durable polypropylene construction for marine environments
• Designed for fresh or saltwater applications
• Direct OEM replacement ensures proper fit and function
• Helps restore pump pressure and flow performance

This upper assembly is an essential service part for maintaining your Shurflo livewell or washdown pump system. The complete housing design simplifies replacement and ensures reliable operation in demanding marine conditions. Ideal for boat owners and marine technicians performing pump maintenance and repairs.