Attwood WaterBuster Portable Submersible Pump
- 200 gallons per hour, 3.33 gpm flow
- Lifts water 3.3 feet, about 40 inches
- 3 D batteries, cordless, up to 5 hours
- 42 inch hose with garden hose adapter
- 5.25 x 5.25 x 6.5 inch body, 16 ounces
Last refreshed Oct 2, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A cordless submersible pump for kayaks, inflatables and pool covers where no power cord is wanted. It is not for permanent bilge use, and batteries are not listed as included.
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ASIN: B000AP2XS2Model: 4140-4Category: Bilge Pumps
Overview
Pumping out kayaks, inflatables, dinghies and pool covers without a cord, this submersible unit runs on D cell batteries and drains through a hose attached to the body. A garden hose adapter lets a longer hose extend the reach.
Battery power means no extension cord near the water, which matters most on small boats and inflatables. The lift height is modest, so it suits shallow drainage jobs rather than constant duty.
Who it's for
Small boat, paddle craft and pool cover owners who need to clear water now and then. Anyone needing a pump wired into the boat for automatic, constant use should look elsewhere.
Pros and cons
- Cordless battery operation
- Compact submersible body
- Garden hose adapter included
- Lightweight to carry
- Not for permanent bilge use
- Batteries not listed as included
- Modest lift height
Performance notes
The pump runs from three D batteries, and the listed run time depends on battery condition. Lift height limits how far above the waterline the hose can discharge, and a longer hose via the adapter adds friction that slows flow.
Specifications
| Brand | attwood |
|---|---|
| Model | 4140-4 |
| Dimensions & fit | |
| Item Dimensions L x W x H | 5.25 x 5.25 x 6.5 inches |
| Maximum Lifting Height | 3.3 feet |
| Weight | 16 ounces |
| Capacity & performance | |
| Flow Rate | 3.33 gpm (200 gallons per hour) |
| Power & efficiency | |
| Power Source | Battery powered, 3 D batteries |
| Voltage | 4.5 volts DC |
| Construction & materials | |
| Material Type | Plastic |
| Warranty & support | |
| Manufacturer Warranty Description | 90 days |
| Other details | |
| Specific Uses For Product | Boating |
Closest rivals on specs
Rule 25SA, 12V Automatic Bilge Pump - Fully Submersible - 500GPH- Flow Rate 3.33 vs 8.33 gpm (-60%)
- Maximum Lifting Height 3.3 vs 1.75 feet (+89%)
SEAFLO 06 Series Automatic Submersible Bilge Pump- Flow Rate 3.33 vs 12.5 gpm (-73%)
- Maximum Lifting Height 3.3 vs 8.2 feet (-60%)
Frequently asked questions
Can the Attwood WaterBuster 4140-4 serve as a permanent bilge pump?
No. The seller notes it is not for use as a permanent bilge pump. It is a portable unit for kayaks, inflatables, duck boats, paddle boats and dinghies.
Can I attach a longer hose to the Attwood WaterBuster?
The listing says a garden hose adapter is included for adding length to the 42 inch hose.
What power does the Attwood 4140-4 need?
It uses three alkaline D batteries, with a listed run time of up to 5 hours. The included components are listed as the pump and information only.