Flexible Impeller Kit – Fits Jabsco/Johnson (Replaces Volvo Penta 21951346, 3862281, 3858256)
Flexible Impeller Kit – Fits Jabsco/Johnson (Replaces Volvo Penta 21951346, 3862281, 3858256) 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
Free standard shipping on all orders under 1 KG
Flexible Impeller Kit – Fits Jabsco/Johnson (Replaces Volvo Penta 2...
Product Details
This Flexible Impeller Kit – Fits Jabsco/Johnson 1210-0001 / 09-1027B (Replaces Volvo Penta 21951346, 3862281, 3858256) is a direct replacement for marine inboard engines equipped with a raw water cooling system. It is designed to fit a wide range of Volvo Penta, Yanmar, Onan, and Perkins models, ensuring reliable performance for engine cooling.
This kit provides a direct interchange for Jabsco 1210-0001, Johnson 09-1027B, Volvo Penta 21951346, Yanmar 129470-42532, and other equivalent part numbers. The package includes all necessary gaskets and O-rings for a complete installation.
- Installs directly into the existing pump housing with no modifications required.
- Made from a durable neoprene compound for reliable service in raw water applications.
- Includes the impeller, gaskets, and O-rings for a comprehensive service.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Jabsco | 1210-0001 |
| Jabsco | 1210-0001-P |
| Johnson | 09-1027B |
| Johnson | 09-1027B-1 |
| Volvo Penta | 21951346 |
| Volvo Penta | 3862281 |
| Volvo Penta | 3858256 |
| Volvo Penta | 876243 |
| Yanmar | 129470-42530 |
| Yanmar | 129470-42531 |
| Yanmar | 129470-42532 |
| Onan | 132-0162 |
| Perkins | 0460038 |
| Perkins | 24880190 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Volvo Penta applications, this impeller fits a range of gas engines from 1994–2007. Check your specific model and OEM part number to confirm.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. |
|---|---|---|---|---|---|
| Volvo Penta | 3.0L | 130-140 | 4-Stroke | 1994–2007 | 21951346, 3862281 |
| Volvo Penta | 4.3L | 190-225 | 4-Stroke | 1994–2007 | 21951346, 3862281 |
| Volvo Penta | 5.0L | 200-270 | 4-Stroke | 1994–2007 | 21951346, 3862281 |
| Volvo Penta | 5.7L | 250-320 | 4-Stroke | 1994–2007 | 21951346, 3862281 |
| Volvo Penta | 7.4L | 300-330 | 4-Stroke | 1994–2007 | 21951346, 3862281 |
| Volvo Penta | 8.1L | 375-420 | 4-Stroke | 1999–2007 | 21951346, 3862281 |
The following tables cover additional confirmed fitments. Specific models for Yanmar, Onan, and Perkins may vary; always cross-reference the OEM part number on your pump.
| Brand | Model | OEM Part No. | Notes |
|---|---|---|---|
| Yanmar | Multiple models | 129470-42530, 129470-42531, 129470-42532 | Specific model info needed |
| Onan | Generator sets | 132-0162 | Used in marine generator applications |
| Perkins | Marine engines | 0460038, 24880190 | Specific model info needed |
Technical Specs
- Product Type
- Water Pump Impeller Kit
- Installation
- Direct replacement
- Material
- Neoprene (rubber compound)
- Impeller Style
- 12-blade
- Drive Type
- 12-spline
- Dimensions
- 57 mm diameter × 31.5 mm width (2-1/4" × 1-1/4")
- Shaft Size
- 16 mm (5/8")
- Insert Type
- Brass
- Housing Color
- Black
- Operating Temperature
- -10°C to 80°C (14°F to 176°F)
- Warranty
- 1 year manufacturer's warranty (typical)
What’s in the Box
- 1 x Flexible Impeller (Replaces Jabsco 1210-0001, Johnson 09-1027B)
- 1 x O-Ring
- 4 x Gaskets
Installation Notes
- Turn off the engine, let it cool, and close the raw water intake seacock.
- Place an absorbent towel under the sea water pump to catch any spills.
- Remove the screws holding the pump's end cover plate.
- Carefully pry the old impeller out of the pump housing using pliers or impeller pullers. Note the bend direction of the old vanes.
- Clean the interior of the pump housing and inspect for scoring or damage.
- Select the correct new gasket or O-ring that matches your old one and place it on the pump body.
- Lightly lubricate the new impeller with a water-based lubricant or liquid soap.
- Insert the new impeller, bending the vanes in the same direction as the old one (typically in the direction of pump rotation).
- Re-secure the end cover plate and tighten the screws evenly.
- Open the seacock, start the engine, and immediately check for proper water flow and leaks.
Troubleshooting & FAQ
How do I know if my impeller needs replacing?
Common signs of a failing impeller include the engine running hotter than normal, a noticeable reduction in water flow from the exhaust, or visible cracks, stiffness, or missing vanes on the impeller itself upon inspection.
How often should I replace my impeller?
As a best practice, inspect your impeller annually and plan to replace it every 1-2 years or every 100-200 hours of engine operation, whichever comes first, to prevent unexpected failure.
The kit came with multiple gaskets. Which one should I use?
This kit is designed to cover multiple pump models. Compare the gaskets provided with your pump’s end cover plate and old gasket to find the exact match for a proper seal.
Can I run the water pump dry?
No. Never run a raw water pump dry, even for a few seconds. The water acts as a lubricant; running it dry will cause immediate damage to the neoprene impeller vanes.
fireWhat is the difference between this neoprene impeller and a nitrile one?
Neoprene impellers, like this one, are specifically designed for engine cooling systems using raw water (sea water or fresh water). Nitrile impellers are used in pumps that handle oils, diesel, or chemicals, as they are more resistant to petroleum products.
My engine is listed, but the year is outside the range. Will it fit?
It's possible, but not guaranteed. Engine manufacturers sometimes use different pumps on the same model in different years. The most reliable way to confirm fitment is to match the OEM part number stamped on your old impeller or documented for your pump.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, it is batch-inspected for consistency and reliability.
Shipping speed & cost
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options will appear at checkout where available for your location.
Warranty & returns
This part is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our policy page or reach out for instructions.
Safety & Important Info
- Verify a suitable match by comparing the images and specifications to your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement part, not an original equipment manufacturer (OEM) component.
- Professional installation is strongly recommended to ensure safety and proper performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world conditions.
- Fast Global Fulfillment — We offer free standard delivery to most regions, with typical transit times of 5–15 days.
- Manufacturer-Direct Value — By working directly with manufacturers, we provide fair pricing without compromising on materials or quality control.
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