Flexible Impeller – Fits Johnson Water Pump F7 (Replaces Johnson 09-1028B-9)
Flexible Impeller – Fits Johnson Water Pump F7 (Replaces Johnson 09-1028B-9) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
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Flexible Impeller – Fits Johnson Water Pump F7 (Replaces Johnson 09...
Flexible Impeller – Fits Johnson Water Pump F7 (Replaces Johnson 09-1028B-9) is backordered and will ship as soon as it is back in stock.
Product Details
This Flexible Impeller – Fits Johnson Water Pump F7 (Replaces 09-1028B-9) is designed for engine cooling water pumps, specifically for the Johnson F7 pump series. It is made from a durable, oil-resistant nitrile compound and features a 12-spline drive for reliable performance. This component is a critical part of the engine's cooling system, ensuring proper water circulation.
This impeller serves as a direct replacement for a wide range of part numbers from brands including Johnson, Jabsco, Sherwood, Volvo, YANMAR, and more. See the Part Number Matrix for a full list of interchanges.
- Engineered for direct, hassle-free installation.
- Oil-resistant nitrile material provides longevity in marine environments.
- Includes the essential impeller, gasket, and O-ring for a complete service.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Johnson | 09-1028B-9 |
| Jabsco | 17937-0003/920-0001 |
| Sherwood | 18200K |
| Volvo | 801277/825941/877061-2/875593/3841697/21951356 |
| YANMAR | 127610-42270/123325-42020/120650-42310/127610-42200 |
| CEF | 500106 GT |
| JMP | 7400-01 |
| Kashiyama | 65.06804-0003 |
| ONAN | 0132-0436 |
| KOHLER | GM50644 |
| DJ | 001-0801 |
| Solé | 34711008/34711008R |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This impeller is known to fit certain models from Detroit Diesel, Caterpillar, Chrysler, and Perkins, though specific application details vary. Verify your OEM part number before ordering.
| Brand | Model | OEM Part No. |
|---|---|---|
| Detroit Diesel | 353, 453, 471 | 5145578 |
| Caterpillar | [Data Needed] | 425-5412/4255412 |
| Chrysler | M46-4/M47-4, 8170F | |
| Perkins | Full Cam, 6354/6.354/6-354 | 2488275 |
| Perkins | Sabre | 34449 |
Compatible Pumps
| Brand | Pump Model | OEM Part No. | Notes |
|---|---|---|---|
| Jabsco | 17050-0001, 29630-1101, 8170, 9700-01, 9700-04, 2300-9005, 8170-9001, 29630-1201 | 2300-9005 listed as optional | |
| Johnson | F7B-8007, F7B-3007, F7B-50017, F7B-5007, F7B-9 | 10-24572-51, 10-24209-7, 10-24577-98, 10-24116-98, 10-24398-01, 10-24398-02, 10-24907-01, 10-24428-01 |
Technical Specs
- Product Type
- Flexible Impeller for Engine Cooling Water Pump
- Material
- Nitrile (oil-resistant)
- Drive Type
- 12 Spline Drive
- Number of Blades
- 8
- Diameter
- 65 mm (2.56")
- Width
- 50.2 mm (1.98")
- Shaft Diameter
- 16 mm (5/8")
- Insert Material
- Brass
- Installation
- Direct replacement
- Dimensions
- 65 mm diameter × 50.2 mm width (2.56" × 1.98")
- Weight
- 49.9 g (1.76 oz)
- Other Technical Attributes
- Oil-resistant nitrile rubber compound
What’s in the Box
- 1 x Flexible Impeller
- 1 x Gasket
- 1 x O-Ring
Installation Notes
- Ensure the engine is off and cool. Close the seacock to prevent water from entering the vessel.
- Place an absorbent towel under the pump to catch any water spillage.
- Remove the pump cover screws and the cover plate.
- Use needle-nose pliers or an impeller puller tool to carefully remove the old impeller.
- Note the orientation of the blades on the old impeller as you remove it; the new one should be installed with blades bent in the same direction.
- Clean the inside of the pump housing and the cover plate, removing any old gasket material or debris.
- Lightly lubricate the inside of the pump housing and the new impeller with a water-based lubricant or glycerine. Do not use petroleum-based grease.
- Install the new gasket and O-ring.
- Insert the new impeller by squeezing the blades together and pushing it into the housing with a rotating motion in the direction of the pump's operation.
- Replace the cover plate and tighten the screws evenly. Do not overtighten.
- Open the seacock, start the engine, and immediately check for leaks and proper water flow.
Troubleshooting & FAQ
How do I know if this impeller fits my engine?
The best way to confirm fitment is to match your existing part number to the ones listed in our Part Number Matrix. While we list compatible engine models, manufacturers may use different pumps on the same model. Always verify by the part number on the impeller or in your engine's service manual.
What are the signs of a failing impeller?
Common signs include engine overheating, reduced water flow from the exhaust, visible cracks or missing blades on the impeller, or a stiff and brittle texture. If you notice any of these, the impeller should be inspected and likely replaced.
How often should I replace my water pump impeller?
As a general rule, it's recommended to inspect your impeller annually and replace it every 1-2 years, or after a specific number of engine hours as recommended by your engine manufacturer. Replacement intervals can be shorter in water with high levels of sand or silt.
Can I install the impeller with the blades bent the wrong way?
No. While the pump will likely correct the blade direction on its first rotation, forcing them to flip can cause premature wear or damage to the blades. It's best practice to pre-bend them in the correct orientation during installation.
What is the difference between Nitrile and Neoprene impellers?
Nitrile (used in this impeller) is oil-resistant, making it ideal for engine cooling pumps where oil or fuel contamination is possible. Neoprene is more flexible and is typically used for general water-pumping duties where oil is not present.
Is a special tool required for installation?
While often not strictly necessary, an impeller puller can make removal much easier, especially in tight spaces. Needle-nose pliers can also work but require more care to avoid damaging the pump housing.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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