Water Pump Impeller Wear Plate – Fits Honda 35HP 40HP 45HP 50HP (Replaces 19231-ZV5-000)

Product Details

This Water Pump Impeller Wear Plate is engineered for Honda outboard motors rated 35HP through 50HP, including BF35A, BF40A, BF40D, BF45A, BF50A, and BF50D across all model years. Designed to protect your impeller and maintain reliable cooling system performance, this wear plate ensures proper clearance and heat dissipation during operation.

This aftermarket component directly replaces Honda OEM part number 19231-ZV5-000, offering a cost-effective alternative without sacrificing fit or function.

• Precision-cut to match OEM dimensions for drop-in installation
• Corrosion-resistant material suitable for saltwater and freshwater environments
• Sold as a set of two wear plates for complete replacement or spares

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Technical Specs

Part Type

Water Pump Impeller Wear Plate

OEM Reference

19231-ZV5-000

Application

Honda Outboard 35–50 HP

Quantity

2 pieces

Material

Corrosion-resistant composite

What's in the Box

• 2 × Water Pump Impeller Wear Plate

Installation Notes

1. Disconnect the fuel line and remove the lower unit according to your engine's service manual.
2. Access the water pump housing and carefully remove the old impeller and wear plates.
3. Clean all mating surfaces thoroughly, removing debris, old gasket material, and corrosion.
4. Position the new wear plates on either side of the impeller, ensuring proper orientation as shown in your service diagram.
5. Lubricate the impeller and wear plates with water-resistant grease to ease assembly and prevent dry starts.
6. Reassemble the water pump housing, lower unit, and secure all fasteners to manufacturer torque specifications.
7. Reconnect the fuel line and run the engine with a flushing attachment to verify proper water flow.

Troubleshooting & FAQ

How do I know if my wear plate needs replacement?

Inspect the wear plate during routine impeller service. Replace if you see deep grooves, cracks, warping, or excessive thinning. Worn plates reduce cooling efficiency and can damage the impeller.

Can I reuse the old wear plate if it looks okay?

While possible, it's best practice to replace wear plates whenever you install a new impeller. The cost is minimal compared to potential overheating damage, and fresh plates ensure optimal clearance and sealing.

Do I need to replace both wear plates at the same time?

Yes, always replace both wear plates together to maintain balanced performance and consistent impeller contact on both sides.

What causes premature wear plate failure?

Common causes include running the engine dry, debris in the cooling system, incorrect installation, or using an impeller that's the wrong size. Always flush after saltwater use and inspect the intake screen regularly.

Will this fit my Honda if the part number matches?

If your OEM part number is 19231-ZV5-000 and your model appears in the compatibility table, this part will fit. Always cross-reference your engine's serial number with Honda documentation if uncertain.

How often should I replace the wear plate?

Replace wear plates during every impeller change, typically every 2–3 years or 200–300 hours of operation, whichever comes first. Saltwater and high-use environments may require more frequent service.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

• Verify images/specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.
• This is an aftermarket replacement, not an OEM component.
• Professional installation is recommended for safety and performance.

About Sea Sierra

• Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
• Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
• Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.