Johnson Pump 09-45587 Impeller Service Kit for F4B-8/9 Pumps

The Johnson Pump 09-45587 Impeller Service Kit is a complete rebuild kit designed specifically for Johnson Pump F4B-8/9 pumps. When an impeller wears out or loses flexibility, the whole wet end of the pump needs fresh sealing hardware along with the new impeller to restore proper pressure and prevent leaks, and this kit brings everything needed for that job together in one package. It includes a replacement impeller, impeller lubricant to ease installation and protect the vanes on startup, two O-rings, three gaskets, four brass flat head screws, and two stainless flat head screws. Using the lubricant during assembly helps prevent the impeller vanes from tearing or taking a set before the pump is first run. Because the kit bundles both the wear part (impeller) and all the sealing and fastening hardware disturbed during a service job, it lets an owner complete a full pump service in one pass instead of ordering pieces separately. This kit is intended for Johnson Pump F4B-8/9 pumps used in marine plumbing and washdown applications. Keeping a spare kit on hand is a common practice for boat owners who want to avoid downtime from a worn impeller mid-season.

Specifications

• Brand: Johnson Pump
• Manufacturer Part Number: 09-45587
• Compatible Pump Series: F4B-8/9
• Kit Includes: Impeller, Impeller Lubricant, O-Ring (Qty 2), Gasket (Qty 3), Brass Flat Head Screw (Qty 4), Stainless Flat Head Screw (Qty 2)
• Material: Plastic
• Color: No Color
• Weight: 0.2 pounds
• UPC: 7330717002480

Frequently Asked Questions

What pumps does the Johnson Pump 09-45587 kit fit? The 09-45587 kit is designed for Johnson Pump F4B-8/9 pumps and is not a universal fit for other pump series.

What is included in the 09-45587 service kit? The kit includes one impeller, impeller lubricant, two O-rings, three gaskets, four brass flat head screws, and two stainless flat head screws, covering everything needed for a full service of an F4B-8/9 pump.

Do I need anything else to complete the service, or is this a full kit? This is a complete kit for the F4B-8/9 pump, bundling the impeller with all the O-rings, gaskets, and screws typically replaced during a service, so no separate hardware purchase is needed for a standard rebuild.

Is impeller lubricant necessary during installation? Yes, the included impeller lubricant should be used when fitting the new impeller from the 09-45587 kit to ease installation and protect the vanes from damage on the first startup.

What material is the kit made from? The components in the Johnson Pump 09-45587 kit are made of plastic.

How much does the 09-45587 kit weigh? The Johnson Pump 09-45587 Impeller Service Kit weighs 0.2 pounds.

How many O-rings and gaskets come in this kit? Two O-rings and three gaskets are included in the 09-45587 kit for the F4B-8/9 pump.

How many screws are included, and what are they made of? The kit includes four brass flat head screws and two stainless flat head screws for reassembling the F4B-8/9 pump.

Is this a genuine Johnson Pump part? Yes, part number 09-45587 is a genuine Johnson Pump service kit manufactured for the F4B-8/9 pump series.

How do I know when it's time to replace the impeller in my F4B-8/9 pump? Reduced water flow or pressure from an F4B-8/9 pump is a common sign the impeller needs replacing, at which point the 09-45587 kit provides the impeller along with fresh seals and screws for the job.

What is the UPC for this product? The Johnson Pump 09-45587 Impeller Service Kit has UPC 7330717002480.