19210-ZY3-003 Water Pump Impeller with Key for Honda BF175A BF200A BF225A BF250A | JLM Marine

Water Pump Impeller with Key for Honda BF175A BF200A BF225A BF250A

This premium aftermarket water pump impeller is engineered to fit Honda outboard engines ranging from 175 HP to 250 HP across multiple model series. Designed for reliable cooling system performance, it ensures your engine operates at optimal temperatures in all conditions.

This impeller directly replaces Honda Marine OEM part number 19210-ZY3-003, as well as aftermarket equivalents from Sierra Marine (18-3031), Mallory Marine (9-45106), and CEF (500391). It is a complete solution that includes the impeller and drive key for straightforward installation.

• Constructed from durable neoprene and hardened nylon for extended service life
• Features 6 blades designed to match OEM specifications
• Includes drive key/pin for complete 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.

Technical Specifications

Package Contents

Your package includes:

• Outboard Rubber Impeller with Key / Pin

Installation Guide

1. Disconnect the battery and ensure the engine is completely cool before beginning work.
2. Remove the lower unit from the outboard motor following your engine's service manual.
3. Locate and disassemble the water pump housing, taking note of component orientation.
4. Remove the old impeller and thoroughly clean the pump housing of any debris or residue.
5. Inspect the pump housing, wear plate, and gasket surfaces for damage or excessive wear.
6. Lubricate the new impeller blades with glycerin or soapy water (never use petroleum-based products).
7. Insert the drive key/pin into the impeller hub, ensuring it is properly seated.
8. Install the impeller into the housing, rotating the driveshaft in the correct direction to align the blades.
9. Replace all gaskets and O-rings with new components to prevent leaks.
10. Reassemble the water pump housing, ensuring all fasteners are torqued to specification.
11. Reinstall the lower unit, reconnect the battery, and test the cooling system by running the engine with a flush attachment.
12. Monitor water discharge from the telltale port to confirm proper pump operation.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my Honda outboard?
A: Cross-reference your engine model with the compatibility table above. Verify that your engine serial number matches the model series listed (BF175A, BF200A, BF225A, or BF250A variants). You can also check your existing impeller's part number against the cross-reference table.

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. If you frequently operate in sandy or debris-laden water, inspect and replace more often.

Q: What are the signs that my impeller is failing?
A: Common symptoms include reduced or no water flow from the telltale port, engine overheating warnings, steam from the engine compartment, or reduced performance. Any of these signs warrant immediate inspection.

Q: Can I use petroleum-based lubricants when installing this impeller?
A: No. Petroleum-based products will damage the neoprene material. Use only glycerin, liquid soap, or dedicated impeller installation lubricant.

Q: What's the difference between this aftermarket impeller and the OEM version?
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.