Water Pump Impeller – Fits Honda 175–250 HP Outboard Motors (Replaces 19210-ZY3-003)

Water Pump Impeller – Fits Honda 175–250 HP Outboard Motors

This water pump impeller is designed for Honda Marine 4-stroke outboard motors from 175 to 250 HP, specifically covering models from 2002 and later. It serves as a direct replacement for the original equipment manufacturer (OEM) part to ensure proper cooling system function.

Replaces the following part numbers: Honda 19210-ZY3-003, Sierra 18-3031, Mallory Marine 9-45106, CEF 500391, and Tohatsu HZY3-19210-003.

• Installation Type: Direct OEM-equivalent replacement
• Material: High-durability neoprene and hardened nylon construction
• Key Maintenance: Lubricate with silicone grease, glycerin, or dish soap during installation

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.

Honda Marine

Tohatsu Marine

Technical Specifications

Package Contents

This package includes:

• 1 x Water Pump Impeller (replaces 19210-ZY3-003)

Note: This is the impeller only. The full water pump service kit (06192-ZY3-000), which would include the gasket, keyway, and O-ring, is sold separately.

Installation Guide

1. Safety First: Disconnect the battery cables from the battery.
2. Access the Pump: Remove the lower unit (gearcase) from the outboard motor.
3. Disassemble Housing: Carefully unbolt and remove the water pump housing to expose the old impeller.
4. Remove Old Impeller: Take note of the blade orientation, then slide the old impeller off the driveshaft. Remove the impeller key.
5. Clean and Inspect: Clean any debris or corrosion from the inside of the pump housing and wear plate.
6. Install New Impeller: Lubricate the new impeller and the inside of the housing with silicone grease or dish soap. Install the new keyway and slide the new impeller onto the driveshaft, rotating it in the direction of engine operation to correctly seat the blades.
7. Reassemble: Reinstall the water pump housing, using new gaskets if necessary, and torque the bolts to the manufacturer's specification.
8. Reinstall Lower Unit: Carefully guide the lower unit back into place, ensuring the driveshaft and water tube align correctly.
9. Test Operation: Reconnect the battery. Start the engine using a water supply (flushing muffs) and check for a steady stream of water from the tell-tale outlet.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my Honda engine?

A: This impeller is designed for Honda 175 HP to 250 HP 4-stroke outboards manufactured from 2002 onwards. Please review the detailed "Compatible Engine Models" table to find your specific model (e.g., BF175, BF200, BF225). The most reliable method is to confirm that your existing part number matches one of the cross-reference numbers, primarily Honda 19210-ZY3-003.

Q: What are the common signs of a worn-out water pump impeller?

A: The most common signs of a failing impeller are your engine overheating at idle or low speeds, or a weak, inconsistent water stream from the "tell-tale" cooling system outlet. Upon inspection, a bad impeller may have cracked, brittle, or permanently curved blades.

Q: How often should I replace the water pump impeller?

A: As a critical preventative maintenance item, it is recommended to inspect the impeller annually. Best practice is to replace it every 1-2 years or every 100-200 hours of engine use, whichever comes first. Usage in saltwater or silty/sandy water may require more frequent replacement.

Q: Is this the complete water pump rebuild kit?

A: No, this listing is for the impeller only. A complete service kit (Honda part 06192-ZY3-000) would also include the impeller gasket, driveshaft key, and O-ring. Those parts are not included here and must be purchased separately if needed.

Q: OEM vs. Aftermarket?

A: 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.

Q: How fast do you ship and how much does it cost?

A: 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.

Q: What is your warranty and return policy?

A: 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.