Johnson Pump Impeller 09-821B – For Volvo Penta D6 E–F AQ & IPS Engines

Product Details

This flexible marine impeller is a direct replacement for the Johnson Pump 09-821B application. Catalog references identify this impeller for Volvo Penta D6 E–F AQ and IPS inboard applications. It is supplied as a single impeller, not as a complete impeller kit.

Use the reference numbers and application information below to compare the impeller with the part removed from your seawater pump before ordering. Confirm the engine version, drive configuration, shaft interface and impeller dimensions for your specific installation.

• Flexible impeller for marine seawater-pump service.
• Listed for Volvo Penta D6 E–F AQ and IPS inboard applications.
• Aftermarket replacement for the applicable Johnson Pump impeller.
• Single impeller only; gaskets, O-rings, lubricant and other installation parts are not confirmed as included.

Part Number Matrix

The following references are associated with this impeller application in the available catalog material. They are provided for identification and interchange checking, not as a guarantee that every number fits every pump configuration.

Engine & Model Compatibility

Compatibility must be checked by engine variant and installation, not by engine family name alone. The available application catalog identifies this impeller for the following Volvo Penta configuration:

This listing does not establish fitment for every D6 horsepower rating, year, serial-number range, drive type or shaft arrangement. Check the original impeller and pump specification before installation.

Technical Specs

Product Type

Flexible marine impeller

Supply Format

Single impeller

Application

Marine seawater-pump replacement

Impeller Diameter

Approximately 65.8 mm

Impeller Width

Approximately 80 mm

Shaft Diameter

Approximately 25 mm

Number of Blades

12

Installation

Direct replacement, subject to pump and shaft verification

What’s in the Box

• 1 x Flexible impeller

Cover gaskets, O-rings, keys, lubricant, screws and other service parts are not confirmed as included with this single-impeller product.

Installation Notes

1. Stop the engine, allow it to cool and close the raw-water intake seacock.
2. Remove the seawater-pump cover and retain the hardware in a clean location.
3. Remove the old impeller using an appropriate impeller puller or suitable hand tools without damaging the pump housing or shaft.
4. Inspect the housing, cover plate, shaft, drive interface and sealing surfaces for wear or damage.
5. Compare the replacement impeller with the original for diameter, width, blade count and shaft interface before fitting.
6. Lubricate the impeller only with a lubricant suitable for the pump manufacturer’s instructions and insert it in the correct direction of rotation.
7. Install a new cover seal or gasket if required for the pump. This product listing does not confirm that a seal is supplied.
8. Refit the cover and tighten the fasteners evenly to the pump manufacturer’s specification.
9. Open the seacock, start the engine and check immediately for cooling-water flow, leaks and abnormal temperature.

Troubleshooting & FAQ

Safety & Important Information

• Verify the exact engine variant, drive configuration, pump model and impeller dimensions before purchase.
• Do not operate the engine with the raw-water intake closed or without confirming proper cooling-water flow after installation.
• Replace worn cover seals or gaskets when required by the pump manufacturer.
• Do not assume that a reference number confirms fitment for every engine year, serial range or horsepower rating.

About Sea Sierra

• Marine Replacement Parts — We provide replacement components for servicing marine engines and cooling systems.
• Application-Focused Information — Reference numbers and application details are presented to support careful part comparison.
• Customer Support — Contact support with your engine model, pump details and existing part references if you need help checking compatibility.