







🚤 Pump smarter, not harder — dominate your marine waste management game!
The Whale Gulper Grouper Mk 3 is a rugged, efficient 12V DC fishbox discharge pump delivering 4.22 gallons per minute with clog-free, low-power operation. Its innovative 90-degree post and 360° rotating head enable easy retrofit and versatile installation in multiple wells. Built with corrosion-resistant materials, it outperforms traditional macerator pumps by eliminating filters, impellers, and motor burn-out risks, ensuring reliable, long-lasting marine waste evacuation.






| ASIN | B01GKCPV6Y |
| Best Sellers Rank | #402,432 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #484 in Power Water Pumps |
| Brand | Whale |
| Brand Name | Whale |
| Color | Black/Blue |
| Customer Reviews | 4.1 out of 5 stars 75 Reviews |
| EU Spare Part Availability Duration | 5 Years |
| Flow Rate | 4.22 Gallons Per Minute |
| Global Trade Identification Number | 00766478949592 |
| Included Components | End Product & Information |
| Item Type Name | boating-waste-treatment-products |
| Item Weight | 4 Pounds |
| Manufacturer | Whale |
| Maximum Flow Rate | 4.22 Gallons Per Minute |
| Model Number | BP4772 |
| Power Source | Battery Powered |
| Product Style | Mk 3 |
| Style | Mk 3 |
| UPC | 766478949592 |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
A**R
Great pump for fish box
This thing sucks great.
T**.
Exact replacement.
Works as designed and described.
D**P
Cut lead
I was replacing an existing pump, same model to make replacement simple, as I had 3 years of good luck with previous pump. I had removed old pump last week waiting for new one, opened box to see the ground lead had been cut. I did add a butt splice to it. I fish salt water, so adding anything in line is a no no in my book. Yes I could have sent it back, and waited for a new one. I did not have time for that, had to make it work. The pump itself, previous one anyway, works great and moves a lot of waste from fish boxes. If wire was not cut, would have been 5 stars.
S**C
Trouble free
Far better than a macerator. Quiet and it doesn't stop running after a few months of not being used.
A**R
Missing part
Need a tricuspid valve not included need it
H**S
Good price and glad to be able to buy on Amazon!
Good price and glad to get on amazon. Okay quality. Last ones only lasted 2 seasons in my fish boxes. I do use them a lot.
E**C
VERY ADAPTABLE
GREAT PUMP CAN'T BELIEVE IT PUMPS WHAT IT PUMPS AS FAST AS IT PUMPS
M**X
Great product
Works great
Trustpilot
Hace 1 mes
Hace 2 semanas