06211-ZV1-505 Water Pump Service Kit for Honda BF4 BF4.5 BF5 | JLM Marine

Water Pump Service Kit – Fits Honda BF4, BF4.5, BF5 Outboard Motors

This aftermarket water pump service kit is designed as a replacement for Honda outboard motors in the BF4, BF4.5, and BF5 series. It includes all the essential components needed to perform a thorough water pump and cooling system service on these small-displacement four-stroke engines.

The kit is referenced against OEM part number 06211-ZV1-505 and includes a comprehensive set of components—impeller, thermostat, oil seal, gaskets, o-rings, fuel filter, gear oil pump, drain gaskets, and cotter pin—allowing a complete service in a single order.

• Covers water pump, cooling, and fuel filter service components in one kit.
• Compatible with Honda BF4, BF4.5, and BF5 outboard engines.
• All components are matched to OEM reference numbers for accurate fitment.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket references.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

This kit includes the following components. Verify each part number against your engine's service manual before installation.

• Gasket (19232-ZV1-A00 / 19232-ZV1-A10) — Qty: 2
• Oil Seal (91252-ZV1-003 / 91252-ZV1-004) — Qty: 1
• Impeller (19210-881-003 / 19210-881-A01 / 19210-881-A02) — Qty: 1
• Thermostat (19300-881-761) — Qty: 1
• Fuel Filter (16910-GB2-005) — Qty: 1
• Drain Gasket (12-191833) — Qty: 3
• O-Ring (91301-ZW4-003) — Qty: 3
• Cotter Pin (90758-ZV1-000) — Qty: 1
• Gear Oil Pump (24OP149) — Qty: 1

Installation Guide

1. Disconnect the engine from the boat and ensure it is secured on a stable work surface. Disconnect the fuel line and battery before beginning any disassembly.
2. Drain the gear oil from the lower unit by removing the drain and vent plugs. Replace the drain gaskets (12-191833) included in this kit.
3. Remove the lower unit by unbolting it from the mid-section. Keep all fasteners organized for reassembly.
4. Disassemble the water pump housing by removing the pump cover, impeller plate, and old impeller. Note the rotational direction of the impeller vanes before removal.
5. Replace the impeller (19210-881-003/A01/A02) and install the new gaskets (19232-ZV1-A00/A10). Ensure the impeller key is properly seated.
6. Install the new oil seal (91252-ZV1-003/004) using a seal driver or suitable socket. Apply a thin layer of marine grease to the seal lip.
7. Replace the O-rings (91301-ZW4-003) on the water tube and housing joints. Do not reuse old O-rings.
8. Install the new gear oil pump (24OP149) if servicing the gear oil circulation system, following the engine service manual torque specifications.
9. Replace the thermostat (19300-881-761) by removing the thermostat housing, swapping the thermostat, and resealing with a new gasket.
10. Install the new fuel filter (16910-GB2-005) in line with the fuel supply hose. Ensure the filter arrow (if present) points toward the engine.
11. Reinstall the new cotter pin (90758-ZV1-000) where required during lower unit reassembly. Never reuse an old cotter pin.
12. Reassemble the lower unit, refill with fresh gear oil, reconnect all lines, and run the engine in a test tank to confirm adequate water flow from the tell-tale before returning to service.

Troubleshooting & FAQ

How do I confirm this kit fits my Honda outboard?
This kit fits the Honda BF4, BF4.5, and BF5 outboard series. Cross-reference the OEM part number 06211-ZV1-505 with your engine's service manual or parts diagram to confirm compatibility before ordering.

Can I use this kit for a partial service, or must I install all components?
You can install individual components as needed; however, for a thorough water pump service, it is recommended to replace all wear items (impeller, gaskets, O-rings, oil seal) at the same time to avoid repeat disassembly and to ensure reliable cooling performance.

How often should the water pump impeller be replaced on Honda BF4/BF4.5/BF5 engines?
Honda generally recommends inspecting and replacing the impeller every 2–3 years or 300 hours of use, whichever comes first. Operating in sandy or debris-laden water may require more frequent replacement.

What are the signs that the water pump or impeller needs replacement?
Common indicators include a weak or absent water stream from the tell-tale outlet, engine overheating warnings, or discolored/cracked impeller vanes observed during inspection. Address these symptoms promptly to avoid engine damage.

Does this kit include a thermostat, and why is it important?
Yes, a thermostat (19300-881-761) is included. The thermostat regulates engine operating temperature; a faulty thermostat can cause overheating or prevent the engine from reaching proper operating temperature, leading to increased wear.

Is this an OEM part?
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.

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

What is your warranty and return policy?
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.