8H033303 Service Kit for Honda BF40 BF50 BF60 | JLM Marine

8H033303 Service Kit for Honda BF40 BF50 BF60

This aftermarket service kit is designed to fit Honda BF40, BF50, and BF60 outboard engines. It bundles the essential maintenance components needed for a comprehensive service interval—covering lubrication, fuel delivery, and sealing—into a single, convenient package.

The kit serves as an aftermarket replacement for Honda OEM service kit 8H033303, providing equivalent coverage for routine maintenance on the BF40, BF50, and BF60 engine series.

• Includes oil filter, fuel filter, drain gaskets, O-rings, gasket, and gear oil pump—covering key service points in one kit.
• Aftermarket replacement built to OEM specifications; not an OEM component.
• Suitable for scheduled maintenance intervals on Honda BF40, BF50, and BF60 outboards.

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

The following items are included in this service kit. Verify all quantities before beginning your service procedure.

• Oil Filter (OEM Ref: 15400-PFB-014 / Aftermarket: 23OF804) × 1
• Fuel Filter (OEM Ref: 16911-ZZ5-003 / Aftermarket: 23FF043) × 1
• Gasket (OEM Ref: 94109-12000 / Aftermarket: 3070) × 1
• Lower Unit Drain Gasket (OEM Ref: 12-191833 / Aftermarket: 2151) × 3
• O-Rings (OEM Ref: 91301-ZW4-003 / Aftermarket: 5226) × 3
• Gear Oil Pump (Aftermarket: 24OP149) × 1

Installation Guide

1. Prepare the engine. Flush and run the engine briefly to warm the oil, making it easier to drain. Shut the engine off and allow it to cool to a safe handling temperature.
2. Drain the engine oil. Remove the oil drain plug and allow the old oil to drain completely into a suitable collection container.
3. Replace the oil filter. Remove the old oil filter (OEM Ref: 15400-PFB-014) and install the new one, applying a thin film of clean oil to the gasket before hand-tightening.
4. Reinstall the drain plug. Install a new gasket (OEM Ref: 94109-12000) on the drain plug and torque to the manufacturer's specification before refilling with fresh oil.
5. Replace the fuel filter. Locate the in-line fuel filter (OEM Ref: 16911-ZZ5-003), clamp off the fuel line, and swap in the new filter, ensuring correct flow direction.
6. Drain the lower unit gear oil. Remove the lower unit drain and vent screws and drain the old gear oil completely. Discard the old drain gaskets.
7. Install new lower unit drain gaskets. Fit new lower unit drain gaskets (OEM Ref: 12-191833, qty 3) onto the drain and vent screws before reinstalling them.
8. Refill the lower unit with gear oil. Inject fresh gear oil from the drain port until it flows from the vent port, then reinstall the vent screw before removing the fill tube and sealing the drain port.
9. Replace O-rings. Inspect all relevant sealing points and install the new O-rings (OEM Ref: 91301-ZW4-003, qty 3) where required, lubricating lightly with clean oil or marine grease.
10. Install the gear oil pump. Remove the old gear oil pump and fit the new pump (24OP149), ensuring all mounting fasteners are torqued to specification.
11. Verify all connections and fasteners. Double-check every drain plug, filter, fuel line clamp, and O-ring seat for proper installation before starting the engine.
12. Run the engine and inspect for leaks. Start the engine and run it briefly at idle, inspecting all service points for any signs of oil, fuel, or gear oil leaks before returning the vessel to service.

Troubleshooting & FAQ

How do I confirm this kit fits my Honda outboard?
This kit is confirmed to fit the Honda BF40, BF50, and BF60 outboard series. Cross-reference the OEM service kit number 8H033303 with your engine's documentation or parts manual to verify fitment before ordering.

How often should I perform a full service using this kit?
Honda generally recommends annual maintenance or service every 100 hours, whichever comes first. Always consult your engine's owner manual for the specific intervals applicable to your operating conditions.

Can I use this kit on Honda BF models other than BF40, BF50, and BF60?
This kit is specifically designed for the BF40, BF50, and BF60. Using it on other models is not recommended, as individual component specifications—filter thread pitch, O-ring dimensions, and pump configuration—may differ.

What are the signs that my oil filter or fuel filter needs replacing?
Common indicators include rough idling, reduced fuel efficiency, dark or contaminated oil at the next oil check, difficulty starting, or visible debris in the fuel filter bowl. Replacing both filters at each scheduled service prevents these issues proactively.

What are the signs that the lower unit drain gaskets or O-rings need replacing?
Water contamination in the gear oil (milky or grey appearance) or visible gear oil weeping around the drain/vent screws are the primary indicators. Always replace the drain gaskets and relevant O-rings at every lower unit service—they are not reusable.

Is this an OEM part or an aftermarket replacement?
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.