When you're comparing 12V submersible marine bilge pumps for your boat's pump and plumbing setup, the first decision isn't flow rate-both are rated at 1100 gallons per hour. The real fork is the hose connection: one pump fits a 1-1/8" hose, and the other fits a 3/4" hose. Both are listed as new and both are submersible.
Quick Verdict
Choose by hose size first. If your boat already uses a 1-1/8" bilge hose, the 1100GPH 12V Electric Marine Submersible Bilge Sump Water Pump Boat 1-1/8" Hose is the direct match. If your plumbing is set up for a 3/4" hose, the 1100GPH 12V Electric Marine Submersible Bilge Sump Water Pump For Boat 3/4" Hose matches that connection and adds The Perfect Part branding, a waterproof ABS casing, and sealed wire-end details. The comparison table shows the listed prices.
Comparison Table
| Product | Listed Price | Price Bar | Hose Fitting | Highlights |
|---|---|---|---|---|
| 1100GPH 12V Marine Submersible Bilge Pump (1-1/8" Hose) | $10.00 | 1-1/8" | 1100 GPH, new, submersible | |
| 1100GPH 12V Marine Submersible Bilge Pump (3/4" Hose) | $12.95 | 3/4" | 1100 GPH, new, ABS waterproof casing, The Perfect Part |
Where Each Pump Wins
The 1-1/8" hose pump wins when your boat's bilge line is already that size. It gives you the 1100 GPH flow rating plus a fitting that matches a 1-1/8" hose.
The 3/4" hose pump wins when your boat's plumbing uses a 3/4" hose. It also delivers 1100 GPH and adds a waterproof ABS casing, durable material, and sealed wire ends. If those extras matter for your marine setup, this is the pump that matches the 3/4" connection.
Product Notes
1100GPH 12V Electric Marine Submersible Bilge Sump Water Pump Boat 1-1/8" Hose
The 1-1/8" hose pump is the straightforward pick when your bilge plumbing is already 1-1/8". It's new, submersible, rated at 1100 GPH, and designed for easy integration into boat plumbing. That makes it a sensible match for replacing or adding a pump on a 1-1/8" line. The limitation is just as direct: this fitting is sized for 1-1/8" hose, so it won't directly connect to a 3/4" hose without changing the plumbing.
1100GPH 12V Electric Marine Submersible Bilge Sump Water Pump For Boat 3/4" Hose
The 3/4" hose pump from The Perfect Part is the pick when your boat's bilge line is 3/4". It matches the hose size and keeps the same 1100 GPH flow rating as the 1-1/8" model. Its ABS waterproof casing, durable build, and sealed wire terminals are consistent with marine use. The trade-off is that its 3/4" fitting won't directly match a 1-1/8" hose line, so you'd need a different pump or a plumbing change for a 1-1/8" setup.
Final Choice by Use Case
- If your boat has a 1-1/8" bilge hose: Choose the 1100GPH 12V Electric Marine Submersible Bilge Sump Water Pump Boat 1-1/8" Hose at $10.00.
- If your boat has a 3/4" bilge hose: Choose the 1100GPH 12V Electric Marine Submersible Bilge Sump Water Pump For Boat 3/4" Hose at $12.95.
