Shurflo by Pentair Upper Assembly Replacement f/4558 Series High Flow Systems 4648 Series Pro BaitMaster II 4.0 Heavy Duty Livewell/Washdown Pumps

This high-quality upper assembly replacement is engineered specifically for marine and boating applications, ensuring reliable performance for your livewell and washdown systems. Designed to seamlessly integrate with Shurflo’s 4558 Series High Flow and 4648 Series Pro BaitMaster II 4.0 Heavy Duty pumps, this replacement assembly provides durability and efficiency to keep your marine equipment running smoothly.

Key Features

• Compatible with both 12V and 24V systems
• Durable construction for long-lasting marine use
• Easy installation with standard fittings
• Optimized for high flow and heavy-duty applications
• Enhanced performance for livewell and washdown systems

Compatibility

Shurflo System	Part Numbers
High Flow System 12V	4558-153-E75, 4258-153-A09, 4258-153-E09
High Flow System 24V	4558-163-E75, 4258-163-A09, 4258-163-E09
Pro BaitMaster II 4.0	4648-153-A07, 4648-153-E07
Pro BaitMaster II 4.0 24 VDC	4648-163-A07, 4648-163-E07

Installation Instructions

Installing the upper assembly replacement is straightforward, ensuring minimal downtime for your marine systems:

1. Turn off the power to your pump system.
2. Disconnect the existing upper assembly from your livewell or washdown pump.
3. Remove any mounting hardware and take out the old assembly.
4. Position the new Shurflo upper assembly in place and secure it with the provided hardware.
5. Reconnect all electrical connections and ensure all fittings are tight.
6. Restore power and test the system to verify proper operation.

Additional Resources

For detailed installation guidance, please refer to the Quick Guide (PDF).

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.