Fuel Pump – Fits Honda BF40D & BF50D 4-Stroke Outboard Motors (Replaces 16700-ZZ5-003)

$52.90

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Delivery and Shipping

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This is a replacement Fuel Pump for Honda BF40D & BF50D 4-Stroke Outboard Motors, specifically designed for 40-50 HP engines produced after the year 2000. It ensures reliable fuel delivery, restoring performance and efficiency to your marine engine.

This assembly is a direct interchange for Honda OEM part number 16700-ZZ5-003.

Engineered for direct-fit installation, no modifications required.
Designed for use in marine environments with gasoline fuel systems.
Kit includes essential installation hardware: two hose clamps and one O-ring.

Part Number Matrix

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

Brand	Part Number
Honda	16700-ZZ5-003

Engine & Model Compatibility

Confirm your engine model/year in the table below.

This fuel pump is compatible with the following Honda outboard models.

Brand	Model	Rated HP	Stroke	OEM Part No.
Honda	BF40D	40	4-Stroke	16700-ZZ5-003
Honda	BF40DK2	40	4-Stroke	16700-ZZ5-003
Honda	BF40DK4	40	4-Stroke	16700-ZZ5-003
Honda	BF50D	50	4-Stroke	16700-ZZ5-003
Honda	BF50DK2	50	4-Stroke	16700-ZZ5-003
Honda	BF50DK4	50	4-Stroke	16700-ZZ5-003

Technical Specs

Product Type: Fuel Pump Assembly
Installation: Direct OEM Replacement
Fuel Type: Gasoline
Housing Color: Black
Weight: 263g (0.58 lb)

What’s in the Box

1 x Fuel Pump Assembly (16700-ZZ5-003)
2 x Hose Clamp (90604-ZV4-000)
1 x O-ring (91306-921-000)

Installation Notes

Ensure the engine is off and cool. Disconnect the battery's negative terminal for safety.
Carefully relieve any pressure from the fuel system. Place rags around fittings to catch fuel spillage.
Disconnect the fuel lines and electrical connectors from the old fuel pump.
Unbolt and remove the old pump assembly from the engine.
Clean the mounting surface and install the new O-ring provided.
Mount the new fuel pump assembly, ensuring it is securely fastened.
Reconnect fuel lines and electrical connectors. Use the new hose clamps provided.
Reconnect the battery terminal.
Prime the fuel system according to your engine's service manual.
Start the engine and carefully inspect for any fuel leaks around the pump and fittings.

Troubleshooting & FAQ

How do I know if my fuel pump is failing?

Common signs of a failing fuel pump include engine hesitation or bogging down under acceleration, sputtering at high speeds, difficulty starting the engine, or a complete loss of power while operating.

Will this fit my specific year Honda BF50D?

This fuel pump is designed for post-2000 Honda BF40D and BF50D series models. The most reliable way to ensure fitment is to match your original part number to the direct replacement number: 16700-ZZ5-003.

What is the purpose of the included clamps and O-ring?

The O-ring ensures a proper seal between the pump and its mounting surface to prevent fuel leaks. The hose clamps are provided to secure the fuel lines tightly to the pump fittings, which is critical for safety and performance.

What is the recommended replacement interval for a fuel pump?

Marine fuel pumps do not have a fixed replacement schedule, as their lifespan depends on usage, fuel quality, and operating conditions. Consider inspection or replacement as part of preventative maintenance on older engines or if you notice any performance issues.

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 vs 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.

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