91356-ZV5-000 Water Pump Impeller Seal for Honda BF35A BF40A BF40D BF45A BF50A BF50D | JLM Marine

Water Pump Impeller Seal – Fits Honda 35-50 HP Outboards (BF35A, BF40A, BF40D, BF45A, BF50A, BF50D)

This water pump impeller seal is engineered to fit Honda marine outboards ranging from 35 to 50 horsepower, including the BF35A, BF40A, BF40D, BF45A, BF50A, and BF50D models across all production years. It ensures reliable sealing within your outboard's water pump assembly to maintain proper cooling system performance.

This aftermarket replacement directly replaces Honda OEM part number 91356-ZV5-000, providing a cost-effective solution for routine maintenance and pump rebuilds.

• Direct replacement for Honda part number 91356-ZV5-000
• Fits multiple Honda 35-50 HP models across all years
• Essential component for water pump maintenance and rebuild kits

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. For Honda owners, you can review exploded diagrams to verify part numbers: Honda Parts Diagrams & Catalog.

Technical Specifications

Package Contents

Your package includes:

• 1 × Water Pump Impeller Seal (91356-ZV5-000)

Installation Guide

1. Disconnect the fuel line and remove the engine cowling to access the lower unit.
2. Drain the lower unit gear oil completely and remove the propeller.
3. Unbolt and carefully separate the lower unit from the mid-section of the outboard.
4. Remove the water pump housing bolts and lift off the housing to expose the pump assembly.
5. Extract the old impeller and carefully remove the old seal from its seat, noting its orientation.
6. Clean all sealing surfaces thoroughly, removing old gasket material and debris.
7. Lubricate the new seal with marine-grade grease and install it in the correct orientation, ensuring it seats evenly.
8. Install the new or cleaned impeller, applying marine grease to the blades for easier installation.
9. Reassemble the water pump housing, ensuring all gaskets and O-rings are properly positioned.
10. Reattach the lower unit to the mid-section, torquing bolts to manufacturer specifications.
11. Refill the lower unit with the correct gear oil and reinstall the propeller.
12. Test the cooling system by running the engine in a test tank or on muffs, checking for proper water flow from the telltale.

Troubleshooting & FAQ

Q: How do I confirm this seal fits my Honda outboard?
A: Cross-reference your engine model with the compatibility table above. If your engine is a BF35A, BF40A, BF40D, BF45A, BF50A, or BF50D (any year), this seal will fit. You can also verify using your original part number 91356-ZV5-000.

Q: How often should I replace the water pump seal?
A: It's recommended to replace the water pump seal every 2-3 years or 200-300 hours of operation, whichever comes first. Always replace it during a full water pump rebuild or if you notice cooling system issues.

Q: What are the signs that my water pump seal is failing?
A: Common symptoms include reduced water flow from the telltale/pilot hole, engine overheating, steam from the cowling, or visible coolant leaks around the lower unit. If you experience any of these, inspect and replace the seal immediately.

Q: Can I install this seal without replacing the entire water pump kit?
A: Yes, the seal can be replaced individually. However, if you're already disassembling the water pump, it's best practice to replace the impeller, gaskets, and other wear components at the same time to prevent future issues.

Q: Is this an OEM or aftermarket part?
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.