Description
Johnson Pump F4B-9 Impeller Pump | Boat Supply Store
This OEM Johnson Pump F4B-9 is engineered for dependable fluid transfer in demanding marine environments. Its bronze body construction and robust neoprene impeller ensure longevity, while the self-priming capability allows a dry lift of up to 3 meters, simplifying installation. Designed specifically for engine cooling applications, it effectively handles raw or freshwater and can pass relatively large solids without obstruction, reducing the need for additional filtration and ensuring uninterrupted system operation, particularly crucial for vessel propulsion and auxiliary power systems.
Key Features
- Self-priming for easy startup and installation
- Solids handling to prevent clogs from debris
- Bronze body for superior corrosion resistance
- Neoprene impeller for durable, long-lasting performance
- Flange mount for secure attachment to specific engines
- 3/4" hose ports for standard marine plumbing
- OEM quality for reliable integration
- Reduced pre-filtering needs due to solids tolerance
Specifications
| Product Specifications | |
|---|---|
| Brand | Johnson Pump |
| Model | F4B-9 |
| Mount Type | Flange Mount |
| Hose Port Size | 3/4" |
| Body Material | Bronze |
| Impeller Material | Neoprene |
| Self-Priming Capability | Yes |
| Dry Lift | Up to 3 meters |
| Solids Handling | Can pass fairly large solids |
Who This Is For
Boat owners and marine mechanics requiring a dependable raw water or freshwater pump for engine cooling or other fluid transfer applications. This pump is particularly suited for installations on specific Kubota Panda engines due to its flange mount design.
How It Compares
| Feature | Johnson Pump F4B-9 Impeller Pump | Jabsco 18590 |
|---|---|---|
| Port Size | 3/4" hose | 3/4" hose |
| Body Material | Bronze | Bronze |
| Impeller Material | Neoprene | Neoprene |
| Mount Type | Flange Mount | Flange Mount |
| Self-Priming | Yes | Yes |
| Solids Handling | Can pass fairly large solids | Can pass solids |
| Engine Compatibility | Panda 12000 NE PMS Kubota, Panda 6000 ND PMS Kubota, Panda 8000 NE PMS Kubota, Panda 9000 ND PMS Kubota | Various engine applications |
Common Concerns Answered
What happens if the pump runs dry?
The impeller can burn out if the pump is run dry for extended periods. It is crucial to ensure the pump is supplied with fluid during operation.
Will this pump fit my engine?
The Johnson Pump F4B-9 utilizes a specific flange mount designed for particular Kubota Panda engine models. Verification of compatibility with your engine's existing mounting system is essential prior to purchase.
Is this pump suitable for all fluid types?
This pump is designed for raw water or freshwater applications. While it can handle some solids, it is not intended for abrasive fluids or slurries.
Frequently Asked Questions
What is the primary advantage of a Johnson Pump F4B-9 Impeller Pump?
The primary advantage is its superior self-priming capability and the ability to handle solids, which simplifies installation and reduces maintenance by negating the need for extensive pre-filtering, especially in engine cooling systems where the pump may not be located below the waterline.
Can this pump run dry?
While the pump is self-priming and can lift water from a dry start, it is not designed for continuous operation when dry. Extended dry running can lead to impeller burnout.
What type of impeller material is used in the F4B-9 pump?
The F4B-9 pump utilizes a standard, long-lasting Neoprene rubber impeller, known for its resilience and effectiveness in handling water and mild solids.
What are the typical applications for the Johnson Pump F4B-9?
Typical applications include raw water or freshwater circulation for engine cooling systems, and general fluid transfer duties where a reliable, self-priming pump with solids-handling capability is required.
What engines is the flange mount designed for?
The flange mount is specifically designed for certain Kubota Panda engine models, including Panda 12000 NE PMS Kubota, Panda 6000 ND PMS Kubota, Panda 8000 NE PMS Kubota, and Panda 9000 ND PMS Kubota.