Keeping water out of the bilge is one of the most important jobs in marine pumps plumbing sanitation. A reliable bilge pump can mean the difference between a dry bilge and a messy cleanout. When you're shopping for a 12V submersible pump, two 1100 GPH options stand out: the 1100GPH Electric Marine Submersible Bilge Pump at USD 8.99 and the 1100 GPH Submersible Bilge Pump at USD 9.99. Both are designed to handle the same flow rate and connect to the same 29mm (1-1/8 inch) outlet, so the choice comes down to a dollar and a few construction details.
Quick verdict
If you want to spend the lower listed price and keep things simple, choose the 1100GPH Electric Marine Submersible Bilge Pump. If you are willing to add $1.00 for more mechanical detail, choose the 1100 GPH Submersible Bilge Pump.
| Feature | 1100GPH Electric Marine Bilge Pump | 1100 GPH Submersible Bilge Pump |
|---|---|---|
| Listed price | USD 8.99 | USD 9.99 |
| Flow rate | 1100 GPH | 1100 GPH |
| Voltage | 12V | 12V DC |
| Outlet | 1-1/8\" (29mm) | 29mm |
| Pump body | ABS | Thermoplastic body |
| Notable details | Non-automatic notice | Stainless steel shaft, water-cooled motor, removable filter |
Where each product wins
- The lower-priced pump wins on listed price and is the simpler of the two.
- The higher-priced pump wins on the extra mechanical details described in its listing.
- The gap is small, so your decision will likely come down to whether you prefer a basic pump or one with more component detail.
1100GPH 12V Electric Marine Submersible Bilge Sump Boat Water Pump 1-1/8\" Hose

This is the lower-priced of the two submersibles. The listing focuses on an electric submersible design, an ABS pump body, and listed dimensions. The dimensions in the listing are H107 mm x W68 mm x D72 mm, so this is a compact unit. It is described as non-automatic, so you will be manually controlling when it runs. That makes it a straightforward way to get the same capacity as the higher-priced model while keeping your spending to the lower listed price. The higher-priced pump adds mechanical extras like a stainless steel shaft and water-cooled motor; this one keeps the focus on the ABS body and core pumping specs. If you do not need those extras, this model delivers the same performance in a simpler package.
1100 GPH Submersible Bilge Pump 12V Marine Boat Electric Water Pump 29mm Outlet

This pump is listed at the higher price, and the listing spells out why. You get a stainless steel shaft, a thermoplastic body, a water-cooled motor, a removable filter, and a note that it can run briefly without water without burning out. The current draw is around 8.5A with 18AWG wiring, which is helpful if you are planning the electrical side of your installation. The package includes one pump, but you will need to supply the batteries and wiring accessories, as the listing points out. The added mechanical detail makes this the better pick if you want to know more about what is inside your pump. The trade-off is the higher listed price, plus sourcing your own wiring and battery hookup.
Final choice by use case
If you want the lowest listed price and a simple electric submersible pump, the 1100GPH Electric Marine Submersible Bilge Pump is the direct pick. The simple design keeps the initial spend down, and you control when it runs.
If you want more mechanical detail from your bilge pump listing, the 1100 GPH Submersible Bilge Pump is worth the extra dollar. The added specifications give you a clearer picture of the pump's construction and performance. Both pumps deliver the same capacity, so the final decision comes down to how much detail you want for the extra dollar.