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Description
Johnson Pump 28503 Cartridge Aerator Pump 500 GPH 12V Straight Intake 3/4"Johnson Pump 500 GPH Aerator (28503) Premium 12V Cartridge Livewell Pump Straight Intake The Johnson Pump 28503 (also known as 32 2850) is the industry standard for reliable livewell aeration. Designed for both fresh and saltwater environments, this cartridge style aerator pump allows for easy maintenance or motor upgrades without the need to disconnect plumbing or remove the entire pump housing. The water cooled motor and 316 stainless steel shaft
Johnson Pump 500 GPH Aerator (28503)
Premium 12V Cartridge Livewell Pump - Straight Intake
The Johnson Pump 28503 (also known as 32-2850) is the industry standard for reliable livewell aeration. Designed for both fresh and saltwater environments, this cartridge-style aerator pump allows for easy maintenance or motor upgrades without the need to disconnect plumbing or remove the entire pump housing. The water-cooled motor and 316 stainless steel shaft ensure longevity in demanding marine conditions.
Key Features
- ✔ **Replaceable Motor Cartridge:** Swap motors in seconds
- ✔ **Anti-Airlock Design:** Prevents air binding in the system
- ✔ **Marine-Grade Build:** 316 Stainless Steel shaft
- ✔ **Energy Efficient:** Low amp draw for battery preservation
Technical Specs
| Flow Rate: | 500 GPH (32 L/min) |
| Voltage: | 12V DC |
| Amperage: | 2.5A |
| Fuse Size: | 5A |
| Hose Connection: | 3/4" (19mm) |
| Intake Style: | Straight |
Compatibility / Fitment Guide
| System Type | Application | Notes |
|---|---|---|
| Marine Livewells | Baitwell Aeration | Standard 3/4" plumbing fitment |
| Fishing Boats | Replacement Cartridge Units | Compatible with most 500 GPH Johnson housings |
| OEM Replacement | Direct fit for SPX/Johnson | Meets ISO 8849 Marine standards |
OEM Cross Reference
| Johnson Pump (Global) | 28503 |
| Johnson Pump (UK/Europe) | 32-2850 / 32-2870 |
| UPC Code | 729321285032 |
| Manufacturer | SPX FLOW Johnson Pump Marine |
Questions & Answers
Is this a genuine original part?
Yes, this is a genuine Johnson Pump product from SPX FLOW, manufactured to strict marine safety and performance standards.
Can I replace the motor without changing the plumbing?
Yes. This pump features a cartridge design that allows the motor unit to be removed and replaced without disturbing the hose connections or the hull mount.
What is the difference between this and the 90-degree version?
This model features a straight intake configuration. If your plumbing requires a right-angle entry from the bottom of the livewell or transom, you would require the 90-degree model (MPN 38503).
Note: Please verify your original part number or hose size (3/4") before purchasing. Available for dispatch from 4boats.co.uk.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy