Water Pump Impeller, 6-Blade, 12 mm Pin Drive – Volvo Penta MD Series, Johnson and Jabsco Replacement
Water Pump Impeller, 6-Blade, 12 mm Pin Drive – Volvo Penta MD Series, Johnson and Jabsco Replacement is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Water Pump Impeller, 6-Blade, 12 mm Pin Drive – Volvo Penta MD Seri...
Water Pump Impeller, 6-Blade, 12 mm Pin Drive – Volvo Penta MD Series, Johnson and Jabsco Replacement is backordered and will ship as soon as it is back in stock.
Product Details
This marine water pump impeller is a six-blade, neoprene replacement designed for raw-water cooling pumps that use a 12 mm pin-drive shaft and a 39.6 mm impeller diameter. It is suitable for selected Volvo Penta marine applications and is cross-referenced with compatible Johnson, Jabsco and aftermarket pump references.
The impeller measures approximately 39.6 mm in outside diameter and 19.2 mm in height. Confirm the dimensions, blade count, shaft-drive style and pump-cover configuration against the original part before installation.
- Six flexible neoprene blades for marine water-pump service.
- 12 mm pin-drive shaft configuration.
- Approximately 39.6 mm outside diameter and 19.2 mm height.
- Designed as an aftermarket replacement for selected marine cooling pumps.
- Single impeller offering; gasket and O-ring are not included unless specifically stated in the applicable product option.
Verified Reference Numbers
These references are provided to help identify the correct replacement. A reference number alone does not replace checking the pump design and physical dimensions.
| Brand or source | Reference | Reference type |
|---|---|---|
| Volvo Penta | 3586496 | Manufacturer reference |
| Jabsco | 22405-0001 | Manufacturer reference |
| Johnson Pump | 09-808B | Manufacturer reference |
| CEF | 500121GX | Aftermarket reference |
| Aftermarket catalogs | IMP00601 | Aftermarket reference |
Engine and Pump Compatibility
Catalog applications associate this six-blade, 12 mm pin-drive impeller with selected Volvo Penta inboard and marine diesel cooling systems, including the following model families and configurations:
| Brand | Applications shown in catalog references | Important fitment condition |
|---|---|---|
| Volvo Penta | MD1A/B, MD2A/B, MD5A/B/C, MD11C/D, MD3B and MD17C/D | Confirm pump cover and shaft-drive arrangement before ordering. |
| Volvo Penta | 2001, 2002 and 2003 marine engine applications | Confirm the exact pump and impeller dimensions for the engine configuration. |
| Johnson Pump | Selected pumps using the 09-808B six-blade, 12 mm pin-drive impeller | Check pump model, port configuration and shaft design. |
| Jabsco | Selected pumps using reference 22405-0001 | Compare the original impeller with the stated dimensions before installation. |
Model names, production years and pump configurations can vary by engine serial number and pump revision. The compatibility information above is not a blanket approval for every engine in a model family.
Technical Specifications
- Product type
- Marine water pump impeller
- Impeller style
- Pin-drive
- Material
- Neoprene rubber
- Number of blades
- 6
- Drive size
- 12 mm pin drive
- Outside diameter
- Approximately 39.6 mm
- Height
- Approximately 19.2 mm
- Application
- Raw-water and engine cooling pumps
- Product format
- Single impeller
What's in the Box
- 1 × six-blade water pump impeller
Gaskets, O-rings, cover plates, keys and other pump-service components are not included unless they are explicitly listed with the selected product option.
Installation Notes
- Switch off the engine, allow it to cool and close the raw-water intake seacock.
- Disconnect the battery when required by the engine manufacturer's service procedure.
- Remove the pump cover and retain the fasteners in a clean location.
- Remove the old impeller with an appropriate impeller puller or removal tool. Avoid damaging the pump housing or shaft.
- Inspect the cover plate, pump housing, shaft, drive pin and seal surfaces. Replace worn or damaged components before fitting the new impeller.
- Clean out any broken blade fragments from the pump and connected cooling passages.
- Apply a suitable water-based lubricant or glycerin to the impeller and pump housing. Do not use petroleum-based grease on the neoprene impeller.
- Install the impeller with the blades folded in the same direction as the original installation and engage the pin drive correctly.
- Install a new gasket or O-ring only when the correct replacement seal is available for the pump. Refit the cover and tighten the fasteners evenly.
- Reopen the seacock, reconnect the battery if disconnected and check for leaks immediately after starting the engine.
Maintenance and Troubleshooting
How do I confirm that this impeller fits?
Compare the original impeller's outside diameter, height, number of blades, drive style and shaft-drive size with the specifications above. Also compare the exact pump model and the reference number stamped or listed for your existing impeller.
What are the symptoms of a worn impeller?
Reduced water flow, rising engine temperature, little or no water discharge at the exhaust and visible cracks, deformation or missing blades can indicate impeller wear. Broken blade fragments may also restrict the cooling system.
How often should the impeller be replaced?
Replacement intervals depend on the engine manufacturer, operating hours, storage conditions and whether the pump has been run dry. Inspect the impeller regularly and follow the service schedule for the specific engine and pump.
Is a gasket or O-ring included?
No. This listing is for one impeller. A gasket or O-ring is included only when specifically stated in the selected product option.
Is this an OEM part?
This is an aftermarket replacement impeller. Volvo Penta, Johnson Pump and Jabsco references are provided for identification and compatibility comparison; the product is not represented as an OEM-branded component.
Safety and Important Information
- Do not operate the engine with the raw-water intake closed except as directed by the service procedure.
- Never run a raw-water pump dry; lack of water can damage the impeller and pump housing.
- Verify the complete pump configuration and physical dimensions before purchase.
- Inspect the cooling system after installation and stop the engine immediately if overheating or leakage occurs.
- Professional installation is recommended when the pump, shaft or cooling system has sustained damage.
About Sea Sierra
- Marine replacement parts — Practical components selected for common engine and pump service applications.
- Fitment-focused information — Reference numbers and dimensions are provided to support careful part comparison.
- Service-ready products — Suitable for planned maintenance and replacement of worn marine cooling-system components.
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