JOHNSON SPX L4000 Bilge Pump, 15,000 L/h, 12V 98000100

Brand : JOHNSON PUMP

Bilge water drainage on recreational and commercial vessels equipped with 12 V systems
High flow rate of 15,000 L/h (250 L/min), suitable for hulls that generate large volumes of water
Connections for 38- and 50-mm (1-1/2" and 2") hoses, compatible with standard through-hull fittings
L4000 model from the professional line for heavy-duty use

€357.00

Shipped from 09/30/2026

Description JOHNSON SPX L4000 Bilge Pump, 15,000 L/h, 12V

Overview

The JOHNSON SPX L4000 12 V bilge pump ensures rapid removal of water that accumulates in the bilge of a motorboat or sailboat. With a capacity of 15,000 L/h, it is well-suited for medium-sized vessels or professional applications where the volume of water to be pumped requires a high submersed flow rate.

Technical Specifications

Specification	Value
Brand	JOHNSON SPX
Manufacturer Part Number	32-4000-01
Model	L4000
Voltage	12 V
Flow Rate	15,000 L/h (250 L/min)
Connection diameter	38 and 50 mm (1½" and 2")

Recommended operating conditions

Install the pump at the lowest point in the bilge, with the outlet routed upward to a through-hull fitting located above the waterline. Ensure that the wiring is protected by a fuse and that the wire gauge is appropriate for the run length to minimize voltage drops.

Technical benefits

Flow rate of 250 L/min → rapid drainage in the event of moderate water ingress or a clogged hull
L4000 model from the professional line → designed for repeated use without any loss of performance
38- and 50-mm outlets → directly compatible with standard hoses and through-hull fittings of these sizes

Usage and Maintenance Tips

Clean the intake strainer periodically to prevent clogging by debris and hair
Check the tightness of the hose connection and the condition of the hose clamp before each launch
Test the pump in dry conditions for only a few seconds; the motor is cooled by the pumped water

Frequently Asked Questions

Is this pump suitable for use in seawater?

Yes, JOHNSON SPX bilge pumps are designed to operate in both saltwater and freshwater. Their construction is engineered to withstand continuous exposure to a marine environment. It is still recommended to rinse the bilge and the pump with freshwater after a prolonged period of winter storage to prevent deposits.

Is a separate switch required for this pump?

This model does not come with a built-in automatic contactor. For unattended operation, a float switch or an Auto/Off/Manu control panel connected between the battery and the pump must be installed. This configuration allows the pump to start automatically as soon as the water level rises in the bilge.

What wire gauge should be used for the electrical connection?

The cable gauge depends on the length of the run between the battery and the pump. For distances under 3 meters, a 2.5 mm² cable is generally sufficient. For longer distances, you should use a 4 mm² cable or larger to minimize voltage drops that would reduce the pump’s actual flow rate.