Inline Fuel Filter – Fits Yamaha 115–250 HP 2-Stroke Outboards (Replaces 646-24251-01, 646-24251-00, 646-24251-02, 6R5-24251-02)
Inline Fuel Filter – Fits Yamaha 115–250 HP 2-Stroke Outboards (Replaces 646-24251-01, 646-24251-00, 646-24251-02, 6R5-24251-02) is backordered and will ship as soon as it is back in stock.
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Inline Fuel Filter – Fits Yamaha 115–250 HP 2-Stroke Outboards (Rep...
Inline Fuel Filter – Fits Yamaha 115–250 HP 2-Stroke Outboards (Replaces 646-24251-01, 646-24251-00, 646-24251-02, 6R5-24251-02) is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket inline fuel filter is designed for selected Yamaha 2-stroke outboards from 115 through 250 HP. It helps remove contaminants from the fuel system before fuel reaches the engine. The company-listed Yamaha applications include V4 and V6 models covering 115, 130, 140, 150–200, 225, and 250 HP, with model-specific year ranges shown below.
The filter is identified by aftermarket reference 18-7713. Listed Yamaha replacement references are 646-24251-01, 646-24251-00, 646-24251-02, and 6R5-24251-02. The same aftermarket reference is also listed against Mercury/Mariner reference 35-80365M; confirm the engine model and serial-number conditions before ordering.
- Inline fuel-filter design for installation in the fuel line.
- Translucent housing helps with visual inspection of fuel and visible contamination.
- Directional flow arrow should point toward the engine fuel pump.
- Sold as one individual fuel filter; no additional fittings or installation hardware are included.
Part Number Matrix
Use the references below to compare the filter with the part being replaced. Part-number references are not a substitute for checking the complete engine model, year, and serial-number conditions.
| Brand | Part Number | Reference Type |
|---|---|---|
| Yamaha | 646-24251-01 | Listed replacement reference |
| Yamaha | 646-24251-00 | Listed replacement reference |
| Yamaha | 646-24251-02 | Listed replacement reference |
| Yamaha | 6R5-24251-02 | Listed replacement reference |
| Mercury/Mariner | 35-80365M | Listed replacement/reference number |
| Aftermarket | 18-7713 | Aftermarket reference |
Engine & Model Compatibility
The Yamaha applications below are the company-listed fitment for this product. Keep the horsepower, stroke, model family, and year range together when checking compatibility.
| Brand | Model/Application | Rated HP | Stroke | Years | Listed References |
|---|---|---|---|---|---|
| Yamaha | V4 models | 115 | 2-Stroke | 1984–2014 | 646-24251-01, 646-24251-00, 646-24251-02, 6R5-24251-02 |
| Yamaha | V4 models | 130 | 2-Stroke | 1988–2014 | 646-24251-01, 646-24251-00, 646-24251-02, 6R5-24251-02 |
| Yamaha | V4 models | 140 | 2-Stroke | 1989–2005 | 646-24251-01, 646-24251-00, 646-24251-02, 6R5-24251-02 |
| Yamaha | V6 models | 150–200 | 2-Stroke | 1984–2013 | 646-24251-01, 646-24251-00, 646-24251-02, 6R5-24251-02 |
| Yamaha | V6 models | 225 | 2-Stroke | 1984–2004 | 646-24251-01, 646-24251-00, 646-24251-02, 6R5-24251-02 |
| Yamaha | V6 models | 250 | 2-Stroke | 1992–2003 | 646-24251-01, 646-24251-00, 646-24251-02, 6R5-24251-02 |
Additional Mercury/Mariner Reference
Catalog records associate reference 35-80365M with selected Mercury 4-stroke fuel-pump applications, including 8 HP, 9.9 HP, and 15 HP models. These records include serial-number-specific ranges such as 0H017100–0H017265, 0H000058 and up, 0P086824–0P400999, 0H000058–0H016909, 0G760300–1B226999, 0P075166–0P400999, 0P134638–0P400999, 0G590000–0G760299, and 9973100–0P016999. Because the applicable model, diagram position, and serial range vary, verify all conditions against the engine before installation.
Technical Specifications
- Product Type
- Inline fuel filter
- Application
- Selected marine outboard fuel systems
- Primary Listed Fitment
- Yamaha 115–250 HP 2-stroke V4 and V6 outboards
- Installation
- Inline in the fuel line
- Fuel Type
- Gasoline
- Housing
- Translucent filter housing
- Connection
- Inline hose connection
- Flow Direction
- Directional; arrow must point toward the fuel pump
- Threaded Connection
- Not applicable; inline hose connection
- Product Status
- Aftermarket replacement component
What's in the Box
- 1 x Inline fuel filter
Installation Notes
- Turn the engine off and allow it to cool before beginning work.
- Work in a well-ventilated area away from flames, sparks, and other ignition sources.
- Locate the existing filter and note the direction of its flow arrow.
- Place an absorbent rag beneath the filter and carefully disconnect the fuel line. Clamp or cap the hose as appropriate to limit fuel spillage.
- Remove the old filter and inspect the hose ends and clamps. Replace damaged or deteriorated hose or clamps before installation.
- Install the replacement filter with its arrow pointing away from the fuel tank and toward the engine fuel pump.
- Secure both fuel-line connections and check that the hoses are fully seated.
- Prime the fuel system as required by the engine manufacturer, then inspect all connections for leaks before operating the engine.
Troubleshooting & FAQ
How do I confirm that this filter fits my engine?
First compare the old filter's manufacturer reference with the references listed above. Then verify the complete engine brand, horsepower, model family, stroke, year, and—where applicable—serial number. Do not rely on horsepower alone.
Is this product a kit?
No. This listing is for one individual inline fuel filter. Fuel hose, clamps, fittings, and other installation parts are not included unless separately specified.
Which way should the filter be installed?
Install the filter so the arrow on the housing points in the direction of fuel flow, from the tank toward the engine fuel pump.
What are common signs of a restricted fuel filter?
Possible symptoms include difficult starting, hesitation, sputtering, reduced power, or stalling under load. Visible debris or discoloration in a translucent housing can also indicate that inspection or replacement is needed.
Can I use this filter on a different engine because the part looks similar?
No. Similar appearance does not establish compatibility. Confirm the listed part reference and all engine fitment conditions before installation.
Is this an OEM filter?
This is an aftermarket replacement filter. Yamaha, Mercury, Mariner, and other brand names and part numbers are used only to identify referenced applications and replacement references.
When should the filter be replaced?
Inspect and replace the filter according to the engine manufacturer's service schedule and whenever contamination, restricted fuel flow, damage, or a leak is found.
Safety & Important Information
- Fuel is flammable. Shut down the engine and eliminate ignition sources before servicing the fuel system.
- Check every connection for leaks before starting or operating the engine.
- Confirm the part number and complete engine fitment conditions before purchase.
- Professional installation is recommended if you are not experienced with marine fuel-system service.
- This is an aftermarket replacement component, not an original-equipment component.
About Sea Sierra
- Marine Parts Focus — Replacement components for outboard and marine fuel systems.
- Fitment-Focused Listings — Product references and application details are provided to support part-number matching.
- Replacement Value — Practical aftermarket alternatives for routine marine maintenance.
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