Water Pump Impeller Repair Kit – Fits Honda 8-20HP 4-Stroke Outboards (Replaces 06192-ZW9-A30, Sierra 18-3478)

Water Pump Impeller Repair Kit – Fits Honda 8-20HP 4-Stroke Outboards (Replaces 06192-ZW9-A30, Sierra 18-3478)

This water pump impeller repair kit is designed for Honda Marine 4-Stroke outboard motors, including 8, 9.9, 10, 15, and 20 HP models manufactured between 2002 and 2006.

It serves as a direct replacement for Honda OEM part 06192-ZW9-A30 and Sierra aftermarket part 18-3478, ensuring precise fit and function.

• Engineered for both salt and freshwater use.
• Installation is a direct replacement for the original components.
• The kit includes a new impeller, gasket, o-ring, and impeller key for a complete service.

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 x Water Pump Impeller (19210-ZW9-A30)
• 1 x Impeller Key (90752-ZW9-A30)
• 1 x Gasket (19232-ZW9-000)
• 1 x O-ring (91301-ZG3-000)

Installation Guide

1. Disconnect the battery and fuel line for safety. Shift the outboard into neutral.
2. Locate and remove the bolts securing the lower unit (gearcase) to the upper engine housing.
3. Carefully separate the lower unit from the driveshaft housing to access the water pump.
4. Unscrew the bolts on the water pump housing cover to expose the impeller.
5. Remove the old impeller, key, gasket, and o-ring. Note the rotational direction of the old impeller fins.
6. Thoroughly clean the inside of the pump housing and cover, removing any old gasket material or debris.
7. Install the new O-ring and gasket. Slide the new impeller key into the driveshaft.
8. Install the new impeller, rotating the driveshaft clockwise while pushing down to seat the fins correctly.
9. Re-install the water pump housing and tighten the bolts to the manufacturer's specified torque.
10. Re-attach the lower unit to the engine, ensuring the driveshaft, shift shaft, and water tube are correctly aligned. Secure with the mounting bolts.

Troubleshooting & FAQ

How do I confirm this fits my Honda engine?
Verify your engine's model, horsepower, and year range against the "Compatible Engine Models" table. This kit is a direct replacement for OEM part number 06192-ZW9-A30. If your model is listed and your original part number matches, it will fit.

What are the signs of a failing water pump impeller?
Common signs include the engine overheating at idle or low speeds, a weak or non-existent water stream from the "telltale" outlet, or finding the old impeller is dry, cracked, or has broken fins upon inspection.

How often should I replace the water pump impeller?
As a critical maintenance item, it is recommended to inspect the impeller annually and replace it every 1-2 years or every 100-200 hours of use, whichever comes first. More frequent replacement may be necessary if operating in sandy, silty, or saltwater conditions.

OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.