When you're shopping in marine pumps plumbing sanitation, the first decision is simple: how much water does your boat actually produce? These two 12V submersible bilge pumps answer that differently. The SEAFLO brings high-output marine pumping, while the compact 1100 GPH model stays small and easy to place. Here is how to choose.
Quick verdict
If you want maximum water-moving capacity and have the electrical system for it, the SEAFLO is the pick. If you need a compact submersible for a smaller bilge or sump, the simpler lower-cost pump will handle routine water.
At a glance
The price spread between these two marine pumps is $90.49, and that gap tracks the flow and plumbing differences.
| Feature | SEAFLO 4700 GPH | 1100 GPH 12V Submersible |
| Price | USD 99.99 | USD 9.50 |
| Flow rate | 4700 GPH | 1100 GPH |
| Outlet / hose | 2-inch outlet | 1-1/8-inch hose |
| Power | 12V DC | 12V electric |
Where each product wins
The SEAFLO wins on output and protective features. Anti-airlock protection, a snap-off strainer base, and a 4-year limited warranty make it the stronger-duty package for demanding bilge work.
The compact pump wins on price and size. Its small submersible body slips into tight spots, and the price difference leaves room in your budget for other marine maintenance.
Product notes
SEAFLO 01 Series 4700 GPH Bilge Pump (12V, 2" Outlet)
The SEAFLO is the high-output pick for a boat that needs serious water removal. It can lift water up to 26.2 feet, and the anti-airlock protection helps clear trapped air so the pump keeps working. The snap-off strainer base makes cleaning simpler, and the CE & RoHS certified listing plus a 4-year limited warranty give it solid backing. Choose it when you need maximum water-moving power and your electrical system can handle roughly 17A of draw. The trade-off is a bigger plumbing footprint and a higher current draw, so it is best matched to a boat that is set up for that level of pumping.
1100 GPH 12V Electric Marine Submersible Bilge Sump Water Pump (1-1/8" Hose)
The compact pump is the simple submersible for smaller jobs. Its 12V electric design lets it run directly in water, and the 1-1/8-inch hose size keeps the installation light. If you are outfitting a small boat or stashing a backup pump, this is a low-fuss way to handle routine moisture. The limitation is capacity: 1100 GPH is enough for slow water buildup but not a major leak, so keep it matched to the space you protect. For a tight bilge or sump, it is a practical and lower-cost option.
Final choice by use case
Choose the SEAFLO 4700 GPH at USD 99.99 if your boat is plumbed with a 2-inch outlet and you want maximum pumping capacity.
Choose the compact 12V submersible at USD 9.50 if you need a smaller, lower-cost pump for a tight bilge, sump, or backup duty.
The SEAFLO is for high water volume. The compact pump is for everyday moisture in small spaces.
