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500 GPH 12 Volt Cartridge Aerator Pump | Johnson Pump 28503
Vendor:Johnson PumpNo reviewsRegular price $50.99 USDRegular priceSale price $50.99 USDSold out -
500 GPH 12 Volt Pump Motor Cartridge | Johnson Pump 28552
Vendor:Johnson PumpNo reviewsRegular price $34.95 USDRegular priceSale price $34.95 USD
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Quality Marine Engine & Drive Parts
Since 2006
Let customers speak for us
from 99 reviewsI like shopping with Macombmarineparts! I did not see an exact replacement so I contacted support and they found it and sent me a picture just to be sure.
These work awesome I run a river that is very shallow and rocky and things happen. These replacement. Blades are better than sliced bread.
Very helpful fast delivery, accurate part numbers
This place was amazing very helpful courteous fast delivery exactly what I need
Changed the remote control and cables on my bass boat from GEN 1 to GEN 11, the new Gen 11 cables fit but with very little adjust thread on the rod. The old Gen1 cables has a lot more adjustment thread. Just put them on my boat today, started and worked good in my driveway, I will get to to lake soon to see how everything does.
Easy ordering and fast shipping
Nice quality part, and fast shipping
Thanks, though the Bosch unit you sent did have a 5th blade and no tab for a securing ****.
Great Stuff Use it Every Winter
Would have been 5 stars but, I did not receive a promotional sticker with my $2000 drive unit. Just kidding, everything was great!
Fast track to Germany…
Ordered aftermarket power pack for my 55hp Johnson. Received email and text offering OEM part at aftermarket price. Absolutely great! Thanks!!!
Great company to work with!
Ordered a Piranha Propellers Complete A-Series 4 Blade Propeller from Macomb Marine Parts and even though we’re international, it arrived in just over a week — fast and reliable service. The propeller itself is a real lifesaver. We had the same model before, and after hitting a rock that damaged two blades, we were able to swap them right on the water and make it back to the marina without issue — something you simply can’t do with a regular aluminum prop. For peace of mind we decided to buy a complete new set (hub and blades) since an impact like that could cause hidden damage, but the system really proved its worth.
3 in. Exhaust Elbow | Pleasurecraft R029001
What customers think about the store
Specializes in marine parts with excellent customer service and fast shipping. Offers competitive prices on OEM and aftermarket parts for engines, outdrives, and propellers. Known for helpful product guidance, accurate order fulfillment, and quick delivery tim... Specializes in marine parts with excellent customer service and fast shipping. Offers competitive prices on OEM and aftermarket parts for engines, outdrives, and propellers. Known for helpful product guidance, accurate order fulfillment, and quick delivery times. Strong international shipping capabilities. Customers praise prompt communication and quality parts that fit perfectly.
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Collection: Aerator - Livewell Pumps
Reliable Aerator - Livewell Pumps for Every Angler
Keeping your catch alive and healthy requires more than just a tank of water; it requires a constant flow of oxygen. At Macomb Marine Parts, we understand that professional and hobbyist anglers alike depend on high-quality Aerator - Livewell Pumps to maintain the perfect environment for bait and game fish. Whether you are prepping for a local tournament or heading out for a relaxing weekend on the bay, your plumbing system must be up to the task.
Our extensive inventory features the most trusted brands in the marine industry. We carry high-efficiency models designed for quiet operation and long-lasting durability. Because marine environments are harsh, we prioritize products that resist corrosion and handle the rigors of both fresh and saltwater applications.
Choosing the Best Aerator - Livewell Pumps
When it comes to selecting the right equipment, performance and flow rate are the most important factors. If your pump is too small, your fish will struggle due to low oxygen levels. Conversely, a pump that is too powerful might create excessive turbulence in a small tank. Therefore, it is vital to match the GPH (gallons per hour) rating to your specific tank size.
Most modern Aerator - Livewell Pumps come with features like "knockdown" or "removable" motor cartridges. These designs are incredibly helpful because they allow you to replace a burnt-out motor without removing the entire plastic housing from your boat’s hull. Consequently, you save time and money on maintenance while avoiding the hassle of re-sealing through-hull fittings.
Installing and Maintaining Aerator - Livewell Pumps
Proper installation is the key to a long-lasting cooling and oxygenation system. To begin, ensure that your pump is mounted below the waterline to prevent airlocks. If air enters the system, the pump will spin but won't move water, which can quickly lead to motor failure. Additionally, always use marine-grade tinned wire for your electrical connections to prevent the inevitable "green rot" caused by moisture.
Furthermore, regular maintenance will extend the life of your Aerator - Livewell Pumps. You should periodically check the intake screen for debris such as sand, weeds, or fish scales. If you notice a change in the sound of the motor or a drop in water pressure, it is usually a sign that the impeller is clogged. Cleaning these components regularly ensures that your livewell remains a healthy sanctuary for your catch.
Why Buy From Macomb Marine Parts?
We take pride in being a leading supplier for boaters who demand the best. Our team carefully vets every product to ensure it meets strict quality standards. We offer various configurations, including straight, 90-degree, and dual-port options to fit any plumbing layout.
In addition to our vast selection, we provide fast shipping and expert advice to help you get back on the water quickly. Don't let a faulty pump ruin a great day of fishing. Explore our full range of Aerator - Livewell Pumps today and experience the difference that professional-grade equipment makes.

