19210-ZW9-A31/32 Rubber Impeller with Key/Pin for Honda BF8D1 D2 D3 BFP8B1 B2 D1 D2 D3 BF9 9DK2 BFP9 9D D1 D2 BF10D2 D4 DK2 BFP10B1 B2 D2 BF15D3 DK2 DK3 BFPD1 BF20D3 DK2 DK3 | JLM Marine

Rubber Impeller with Key/Pin – Fits Honda 8-20 HP Outboard Engines

This aftermarket rubber impeller assembly is designed to fit a wide range of Honda outboard engines from 8 HP to 20 HP, covering the BF8, BFP8, BF9, BFP9, BF10, BFP10, BF15, and BF20 series. It serves as a direct replacement for OEM part number 19210-ZW9-A31/32, ensuring reliable water circulation in your engine's cooling system.

Engineered to meet or exceed OEM specifications, this impeller includes the necessary key/pin for secure installation. Regular impeller replacement is essential to prevent overheating and maintain optimal engine performance.

• Includes impeller with key/pin for complete installation
• Direct replacement for Honda OEM 19210-ZW9-A31/32
• Fits multiple Honda BF and BFP series engines

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

• 1 × Outboard Rubber Impeller with Key/Pin

Installation Guide

1. Disconnect the battery and ensure the engine is off and cool before beginning work.
2. Remove the lower unit or water pump housing according to your engine's service manual.
3. Carefully extract the old impeller from the pump housing, noting the direction of the blades.
4. Inspect the pump housing for wear, corrosion, or debris and clean thoroughly.
5. Lubricate the new impeller with glycerin or soapy water—never use petroleum-based lubricants.
6. Align the key/pin with the drive shaft slot and insert the impeller with blades oriented in the correct rotation direction.
7. Ensure the impeller is fully seated and the key/pin is properly engaged.
8. Reinstall the pump housing or lower unit, ensuring all gaskets and seals are properly positioned.
9. Torque all bolts to manufacturer specifications in the correct sequence.
10. Reconnect the battery and start the engine to verify water flow from the telltale outlet.
11. Monitor engine temperature during initial operation to confirm proper cooling system function.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my Honda engine?
A: Cross-reference your engine model with the compatibility table above. Verify that your engine requires OEM part number 19210-ZW9-A31 or 19210-ZW9-A32.

Q: How often should I replace my water pump impeller?
A: Most manufacturers recommend replacing the impeller every 2-3 years or 200-300 hours of operation, whichever comes first.

Q: What are the signs that my impeller is failing?
A: Common symptoms include reduced or no water flow from the telltale outlet, engine overheating, weak stream from the cooling outlet, or visible cracks and missing blades.

Important Notes

• Verify that the product images and specifications match your original part before purchasing.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.