Choosing a marine bilge pump usually comes down to three things: how much water it can move, what size hose it connects to, and how much you pay. All four pumps here share the same 1100 GPH flow rate and 12V submersible design, but the hose openings and prices split them into two groups. If your boat uses a 3/4" hose, you have two nearly identical options that differ in product identification and extra specs. If you need a larger opening, the 1-1/8" and 29mm outlet pumps give you a lower price point and more concrete specifications.
Quick take
For a 1-1/8" hose, the $8.40 pump is the least expensive in this group, but the $9.99 pump adds a removable filter, water-cooled motor, stainless steel shaft, and a labelled 29mm outlet. For a 3/4" hose, the $12.95 Perfect Part pump includes a brand name and a UPC, while the $12.99 pump is nearly identical in capacity and hose size. The $4.59 price spread across the four pumps tracks the hose size and the amount of detail supplied.
Listed price comparison
| Model | Listed price | Price bar |
|---|---|---|
| 1-1/8" hose pump | $8.40 | |
| 29mm outlet pump | $9.99 | |
| 3/4" hose pump, The Perfect Part | $12.95 | |
| 3/4" hose pump | $12.99 |
Decision matrix
| If you want | Choose | Why |
|---|---|---|
| Lowest listed price | 1-1/8" hose pump | $8.40 and a 1-1/8" hose opening |
| Most extra pump details | 29mm outlet pump | $9.99, 29mm outlet, detailed specifications |
| 3/4" hose with a brand and UPC | The Perfect Part pump | $12.95, brand name, UPC included |
| 3/4" hose with the highest listed price | 3/4" hose pump | $12.99, same hose size |
Product notes
3/4" Hose Pump
This 3/4" hose model has the highest listed price in the comparison. The description highlights an ABS casing described as durable and waterproof and a motor positioned for long-term service. If your boat's plumbing uses a 3/4" hose and you want the straightforward capacity, this pump covers the same ground as the other 3/4" option. The alternative from The Perfect Part lists for $0.04 less and includes a brand name, so the main reason to pick this one would be the same hose size without caring about the extra product identification.
1-1/8" Hose Pump
This is the lowest listed price in the group and uses a 1-1/8" hose opening. The description for this model calls it a reliable and efficient way to remove bilge water, but it does not carry the extra specification details found on the 29mm outlet pump, and the pump is listed with no UPC. If you already have a 1-1/8" hose and want the least expensive option here, this one gets the job done. Just be ready to do without the more detailed feature breakdown that the $9.99 pump includes.
3/4" Hose Pump, The Perfect Part
The Perfect Part model includes a brand name and a UPC. It connects to a 3/4" hose and carries a description similar to the other 3/4" pump: strong motor, durable ABS casing, waterproof construction. It lists for $0.04 less than the other 3/4" option, making it the more complete 3/4" choice when you weigh product identification against cost. If a branded pump with a UPC matters to you, this is the 3/4" version to select. The trade-off is that it still has a higher listed price than the two larger-outlet pumps.
29mm Outlet Pump
With a 29mm outlet described as 1-1/8", this pump provides the most detailed specifications: stainless steel shaft, thermoplastic body, removable filter, water-cooled motor, about 1 meter of 18AWG wire, 8.5A current draw, and an ability to run briefly without water. It sits between the lowest and highest listed prices in the comparison, yet it adds a lot of operational information. The catch is that batteries and wiring accessories are not included, and it carries no warranty. If you want the larger outlet plus extra specs, this is the stronger pick over the lower-priced 1-1/8" pump.
Bottom line
The deciding factor is hose size. Choose the 1-1/8" pump at $8.40 when you want the lowest listed price and only need the basic capacity. Choose the 29mm outlet pump at $9.99 if you want the larger opening plus extra specs. For a 3/4" hose, take the Perfect Part version at $12.95 for the brand and UPC, and use the $12.99 pump only when the 4-cent difference does not matter.
