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Johnson Pump 05903-00 Cartridge Combo Automatic Submersible Bilge Pump - 12V, 1000 GPH, red
Efficient and convenient, the Cartridge Bilge Pump Combo ensures automatic pumping and easy installation with its Dura-Port discharge ports.
Johnson Pump 05903-00 Cartridge Combo Automatic Submersible Bilge Pump - 12V, 1000 GPH, red
Item #: 2237850

Johnson Pump 05903-00 Cartridge Combo Automatic Submersible Bilge Pump - 12V, 1000 GPH, red

Item #: 2237850

GMD 8508

Price Details

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*All items will import from US

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Order now and get it around Friday, August 21
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Efficient and convenient, the Cartridge Bilge Pump Combo ensures automatic pumping and easy installation with its Dura-Port discharge ports.
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Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.

What Stands Out

High Capacity
Pumps up to 1000 gallons per hour, effectively removing excess water from your boat, ensuring safety and preventing damage during your marine adventures.
Automatic Operation
Equipped with an automatic switch, the pump activates when water levels rise, providing peace of mind and allowing users to focus on enjoying their time on the water.
Durable Design
Built with high-quality materials for lasting performance, the Johnson Pump balances reliability and efficiency, making it an ideal choice for avid boaters seeking dependable solutions.

Product Details

Shop for the 12V, 1000 GPH Johnson Pump 05903-00 Cartridge Combo Automatic Submersible Bilge Pump in red at Ubuy The Gambia. Includes removable check valve and fittings. Easy replacement of motor element.
Package Weight1.5 Pound

Who Should Buy?

Suitable For
  • Boat Owners

    Ideal for boat owners needing effective bilge water removal for small to medium-sized vessels.

  • DIY Enthusiasts

    Perfect for DIY boat maintenance, providing an easy-to-install and efficient pumping solution.

  • Emergency Preparedness

    Useful for emergency water removal situations, ensuring safety in unforeseen flooding scenarios.

Not Suitable For
  • Large Vessels

    Not suitable for larger boats requiring higher capacity pumps for effective water removal.

Product Description

Johnson Pump 05903-00 Cartridge Combo Automatic Submersible Bilge Pump - 12V, 1000 GPH, red

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the capacity of the pump?

    Answer: The Cartridge Bilge Pump Combo has a capacity of 1000 gallons per hour (GPH).
  • Question: How does the automatic operation work?

    Answer: The pump is equipped with an electro-magnetic float switch that detects the water level and activates the pump when necessary.
  • Question: Is installation easy?

    Answer: Yes, the pump is designed for easy installation with its Dura-Port discharge ports.
  • Question: Will this item fit a 3/4 inch hose?

    Answer: Yes
  • Question: If my boat has a manual bilge pump switch can I still use this with that switch or will i have to buy a 2 way switch?

    Answer: You can use it for manual bilge pump but you will need to rig the float in the up position. It would be better to just get a pump that is designed for an on-off not an automatic.
  • Question: I want to replace a johnson pump (not a auto one) will this auto one fit in the base?

    Answer: It should. The automatic switch is separate of the pump cartridge unit.
  • Question: Does this pump combo come with a wiring diagram?

    Answer: Yes, simple to wire up.
  • Question: Does this product come with reducers?

    Answer: Only reducers are the ones you see in the package. I had to get mine from Home Depot.
  • Question: Anyone have the install manual for this?

    Answer: Install directions comes with pump.
  • Question: What amp inline fuse do I use with this pump?

    Answer: 7.5 amp.
  • Question: How many wires does it have?

    Answer: It comes prewired with a switch and has two wire for power and a third wire for manual override.
  • Question: How much room does this pump take?

    Answer: Not very much space and the discharge articulates. How much space do you have. Anti back flow on the discharge is crappy and not always easy to find.

Johnson Pump Bilge Pumps Editorial Review

The Johnson Pump Cartridge Combo Bilge Pump 1000GPH, 12V has received mixed reviews from customers. Some users have reported a good service life and reliable performance from this pump, while others have experienced various issues and noted a decrease in quality over time. One user expressed concern about the automatic feature, cautioning that a small piece of trash could disable the automatic function. Another user, who had been using the pump for 5 years, was disappointed with the quality and reported having to replace the unit almost every year due to issues such as the float sticking and the pump running excessively, leading to a risk of a dead battery. They also mentioned that the pump loses its prime and sometimes the motor locks up, although it can be temporarily resolved with pliers. Another user mentioned a problem where the pump was running but not pumping water, requiring them to manually intervene to get it working. They also expressed dissatisfaction with the design flaw of the flow switch, which sticks and requires banging to shut off. This user highlighted the inconvenience of having to babysit the pump while boating and mentioned Considering a different brand for future purchases. On a positive note, a user mentioned that the pump works well even with trash and is easy to disassemble and unclog if needed. However, other users had negative experiences, with complaints about the float switch not working and the overall engineering being described as "horrible". In essence, while some customers have had a positive experience with the Johnson Pump, others have encountered various issues with its functionality and reliability. The mixed feedback suggests that the pump's performance and durability may be inConsistent.

Customer Reviews & Ratings

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Pros

  • Good service life for some users
  • Can work well even with trash in the bilge
  • Easy to disassemble and unclog

Cons

  • Problems with automatic function, float switch, and motor locking up

Platform Trust & Buyer Confidence

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Mohammad
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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”

23 July 2026 · via Trustpilot
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Chitra
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”

22-Jul-26 · via Trustpilot
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kund
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“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”

23-Jul-26 · via Trustpilot
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Onesi
Verified buyer

“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”

22 July 2026 · via Trustpilot
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SAO JOHN
Verified buyer

“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”

23 July 2026 · via Trustpilot
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Important information

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