Water Pump Impeller Kit – Fits Johnson, Yamaha, Jabsco, Yanmar Inboards (Replaces 09-812B-1, 6TA-12457-00, 13554-0001-P, 119773-42600)
Water Pump Impeller Kit – Fits Johnson, Yamaha, Jabsco, Yanmar Inboards (Replaces 09-812B-1, 6TA-12457-00, 13554-0001-P, 119773-42600) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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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.
International delivery times may vary due to customs processing.
Tracking information will be provided once your order ships.
Water Pump Impeller Kit – Fits Johnson, Yamaha, Jabsco, Yanmar Inbo...
Water Pump Impeller Kit – Fits Johnson, Yamaha, Jabsco, Yanmar Inboards (Replaces 09-812B-1, 6TA-12457-00, 13554-0001-P, 119773-42600) is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Impeller Kit provides a reliable replacement solution for a wide range of inboard marine engines. It is specifically designed to fit Johnson F6B-9 V8 pumps, Indmar Monsoon 320–350HP engines, and various Volvo Penta, Yanmar, and Yamaha applications.
This kit directly interchanges with multiple OEM and aftermarket part numbers, including Johnson 09-812B-1, Jabsco 13554-0001-P, Yanmar 119773-42600, Yamaha 6TA-12457-00, and Sierra 18-3306.
- Simple direct-replacement installation.
- Made from durable, high-performance neoprene.
- Features a 12-spline brass hub for secure engagement.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Johnson | 09-812B |
| Johnson | 09-812B-1 |
| Jabsco | 13554-0001 |
| Jabsco | 13554-0001-P |
| Yanmar | 119773-42600 |
| Yamaha | 6TA-12457-00 |
| Sierra | 18-3306 |
| Volvo Penta | 21951354 |
| Volvo Penta | 3842786 |
| Volvo Penta | 21213664 |
| Volvo Penta | 21951352 |
| CEF | 500124 |
| JMP | 7136 |
| DJ Pump | 09-105-1201 |
| Indmar | S685007 |
Technical Specs
- Product Type
- Water Pump Impeller Kit
- Installation
- Direct replacement
- Impeller Material
- Neoprene
- Drive Type
- Spline Drive (12-spline)
- Blades
- 12
- Hub Material
- Brass
- Diameter
- 57.1 mm (2.25")
- Width
- 48.2 mm (1.90")
- Shaft Diameter
- 16 mm (5/8")
- Silhouette
- 12 Blade
What’s in the Box
- 1 x Impeller (18-3066)
- 2 x O-Rings
- 1 x Gasket
- 1 x Plug
Installation Notes
- Disconnect the boat's battery to prevent accidental starts.
- Close the raw water intake seacock to stop water flow.
- Place absorbent pads under the pump to catch any spills.
- Remove the screws from the water pump's cover plate.
- Note the rotational direction of the old impeller blades before carefully removing it.
- Clean and inspect the pump housing's interior for any scoring or damage.
- Lightly lubricate the new impeller and housing interior with a suitable marine lubricant.
- Insert the new impeller with a twisting motion, ensuring blades bend in the correct direction of pump rotation.
- Install the new gasket or O-ring on a clean sealing surface.
- Re-install the cover plate and tighten screws evenly in a star pattern.
- Open the seacock and reconnect the battery.
- Start the engine and immediately check for adequate water flow and any leaks around the pump.
Troubleshooting & FAQ
How do I know if this impeller fits my engine?
The best way is to match your existing part number to the equivalents listed in our Part Number Matrix. If you cannot find your part number, verify the technical specifications (Diameter, Width, Shaft Diameter, Drive Type) against your old impeller.
What are common signs of a failing impeller?
Key indicators include engine temperatures rising above normal, a noticeable reduction in water flow from the exhaust outlet, and visible cracks or missing blades on the old impeller upon inspection.
How often should I replace my impeller?
For preventative maintenance, it is recommended to replace your impeller every one to two years, or every 100-200 hours of engine use. The interval can vary based on usage (e.g., in sandy or silty water).
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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