Johnson Pump F5B-1907 Flexible Impeller Pump | 12V - 3/4" NPT (10-24188-4)

The Johnson Pump 10-24188-4 (Model F5B-1907) is a heavy-duty, self-priming flexible impeller pump designed for a wide range of marine applications. Built with a rugged bronze body, this pump is the industry standard for high-performance tasks such as bilge pumping, deck washing, water ballast transfer, and engine cooling

Heavy-Duty Bronze Construction

Unlike plastic centrifugal pumps, the F5B-1907 is a positive displacement pump. This allows it to handle solids (up to a certain size) and provide significant vertical lift. The bronze housing and stainless steel shaft are engineered to withstand the corrosive marine environment, while the high-quality flexible impeller ensures a steady flow even at varying pressures.

Key Features:

• Powerful Self-Priming: Capable of priming itself up to a vertical lift of 13 feet (4 meters), allowing for versatile mounting locations well above the waterline.

• Rugged Bronze Body: The heavy-duty cast bronze construction provides maximum durability and resistance to saltwater corrosion.

• Multi-Purpose Utility: Ideal for high-capacity bilge pumping, washdown, and fuel or oil transfer (when fitted with the appropriate impeller).

• High-Torque Motor: Equipped with a robust 12V DC motor designed for heavy-duty cycles and long-term reliability.

• 3/4" NPT Ports: Features standard 3/4" NPT female threaded ports, making it easy to integrate into existing heavy-duty plumbing systems.

• Mechanical Seal: Uses a high-quality lip seal to protect the motor from water ingress, ensuring a long service life.

• Ease of Maintenance: The end cover is easily removed for quick impeller inspection or replacement without disconnecting the pump from the plumbing.

Technical Specifications:

• Model Number: 10-24188-4 (F5B-1907)

• Flow Rate: ~11.9 GPM (45 L/min)

• Voltage: 12V DC

• Amperage: 15.0 Amps

• Fuse Size: 25 Amps

• Port Size: 3/4" NPT Internal Thread

• Body Material: Bronze

• Shaft Material: Stainless Steel

• Weight: 6.6 lbs (3 kg)

• Dimensions: 7.95" L x 4.72" W x 3.54" H

Why Choose the Johnson F5B-1907?

The 10-24188-4 is the go-to choice for boaters who need more "muscle" than a standard plastic bilge pump can provide. Its ability to pull water from deep in the keel and its compatibility with various impeller materials (Nitrile for oil/fuel, MC97 for water) make it one of the most versatile pumps in the Johnson catalog.

Installation Pro-Tip:

Never run this pump dry for more than 30 seconds. Flexible impellers rely on the liquid being pumped for lubrication; running it dry will cause friction heat that can melt the impeller blades and damage the pump housing.