Water Pump Impeller – Fits Honda 75–150 HP Outboards (Replaces 19210-ZW1-B04)

Water Pump Impeller – Fits Honda 75–150 HP Outboards (Replaces 19210-ZW1-B04)

This water pump impeller is designed to fit a wide range of Honda BF75, BF90, BF115, BF130, BF135, and BF150 4-Stroke outboards, covering models from 1999 to 2006 and newer.

It serves as a direct replacement for multiple OEM and aftermarket part numbers, including Honda 19210-ZW1-B02, 19210-ZW1-B03, 19210-ZW1-B04, Sierra 18-3250, Mallory 9-45104, EOONI 19210-ZW1-B04, and Mercury 43026Q02, ensuring broad compatibility for your maintenance needs.

• Installation Method: Direct replacement for the original impeller.
• Material Construction: Made from a durable combination of neoprene and hardened nylon for reliable performance.
• Blade Count: Features a 6-blade design, matching OEM specifications for efficient water flow.

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-ZW1-B04)

Explosion Diagram

Installation Guide

1. Safety First: Disconnect the engine's battery cables before beginning work.
2. Access the Pump: Remove the lower unit (gearcase) from the outboard motor to access the water pump assembly.
3. Disassemble Housing: Carefully unbolt and remove the water pump housing cover. Keep track of the bolts and their locations.
4. Remove Old Impeller: Take out the old impeller. Note the direction the blades are bent; the new ones must be installed in the same rotational direction.
5. Inspect and Clean: Clean the inside of the pump housing and the wear plate. Inspect them for any scoring, warping, or damage. Replace the housing or plate if significant wear is found.
6. Install New Impeller: Lightly lubricate the inside of the housing and slide the new impeller into place, rotating the driveshaft in the direction of engine operation to bend the blades correctly.
7. Reassemble: Re-install the water pump housing, ensuring any seals or gaskets are correctly seated. Torque the bolts to the manufacturer's specified values.
8. Final Steps: Re-install the lower unit onto the outboard, reconnect the battery, and test the engine using a water supply (flushing muffs or a test tank) to confirm proper water circulation from the tell-tale outlet.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my Honda outboard?
A: Check your engine's model and year against the "Compatible Engine Models" table. You can also verify by matching your existing part number with the ones listed in the "Part Number Cross-Reference" table, specifically the OEM part number 19210-ZW1-B04.

Q: What are the common signs of a failing water pump impeller?
A: The most common signs are engine overheating, a weak or non-existent stream of water from the "tell-tale" outlet, or an alarm from your engine's warning system. Upon inspection, you might find the old impeller has cracked, brittle, or missing blades.

Q: How often should I replace the water pump impeller?
A: For preventative maintenance, it is highly recommended to inspect the impeller annually and replace it every 1-2 seasons or 100-200 hours of use. This interval may be shorter if you frequently operate in sandy, silty, or saltwater conditions.

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.