Inline Fuel Filter for 3/8 in. Fuel Hose – Johnson/Evinrude and Mercury Replacement
Inline Fuel Filter for 3/8 in. Fuel Hose – Johnson/Evinrude and Mercury Replacement is backordered and will ship as soon as it is back in stock.
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Inline Fuel Filter for 3/8 in. Fuel Hose – Johnson/Evinrude and Mer...
Inline Fuel Filter for 3/8 in. Fuel Hose – Johnson/Evinrude and Mercury Replacement is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket inline fuel filter is intended for outboard fuel systems that use 3/8-inch (approximately 10 mm) inside-diameter fuel hose. It installs in the fuel line between the tank and engine to help capture fuel contaminants before they reach sensitive fuel-system components.
The filter is commonly listed as a replacement or interchange reference for Johnson/Evinrude 398319 and Mercury 802128A1/802128. Additional aftermarket reference numbers associated with this filter style include Sierra 18-7831, GLM 40160, Mallory 9-37960, Wix 33033, and Fram G3/G15. Reference numbers are provided for identification; confirm the hose size, filter configuration, and application before ordering.
- Inline installation on a compatible 3/8-inch fuel line.
- 10-micron filtration rating as specified for this filter.
- Sonically sealed plastic housing intended for gasoline and ethanol-blended fuels.
Part Number Matrix
The following numbers are commonly associated with this filter type. Verify the original filter and your engine or fuel-system requirements before purchase.
| Brand | Part Number |
|---|---|
| Johnson/Evinrude | 398319 |
| Mercury | 802128A1 |
| Mercury | 802128 |
| Sierra | 18-7831 |
| GLM | 40160 |
| Mallory | 9-37960 |
| Wix | 33033 |
| Fram | G3 |
| Fram | G15 |
Engine and Model Compatibility
This filter is intended for compatible Johnson/Evinrude, Mercury, and other marine fuel systems using a 3/8-inch fuel line. A general brand or horsepower range is not sufficient to confirm fitment because fuel-filter requirements can vary by engine model, year, fuel-system layout, and hose size.
| Brand or Application | Model | Rated HP | Stroke | Years | Reference | Fitment Requirement |
|---|---|---|---|---|---|---|
| Johnson/Evinrude | Applications using the listed replacement reference | Not specified | Not specified | Not specified | 398319 | Verify the exact engine application and 3/8-inch fuel-line connection. |
| Mercury | Applications using the listed replacement reference | Not specified | Not specified | Not specified | 802128 or 802128A1 | Verify the exact engine application and 3/8-inch fuel-line connection. |
Technical Specifications
- Product Type
- Inline fuel filter
- Installation
- Inline in a compatible fuel hose
- Filtration Rating
- 10 micron
- Fuel Type
- Gasoline and ethanol-blended gasoline
- Connection
- 3/8-inch (approximately 10 mm) hose barbs
- Housing Material
- Plastic housing with metal end caps
- Housing Color
- Clear or translucent body with black ends
- Weight
- 59 g (2.08 oz)
- Fitting Type
- Barbed hose connection
- Other Technical Attributes
- Sonically sealed end caps; intended for use with ethanol-blended fuels
What's in the Box
- 1 × inline fuel filter
Installation Notes
- Confirm that the replacement filter has the correct hose-barb size and matches the original filter configuration.
- Work in a well-ventilated area away from flames, sparks, and other ignition sources. Allow the engine to cool before service.
- Locate the existing filter on the fuel line between the tank and engine, and place an absorbent cloth or suitable container below it.
- Relieve fuel-system pressure as directed by the engine manufacturer's service instructions.
- Note the direction-of-flow arrow on the old filter, if present, and disconnect the fuel hoses and clamps.
- Install the replacement filter with its flow arrow pointing toward the engine, if an arrow is marked on the filter body.
- Push the hoses fully onto the barbs and secure the clamps without damaging the hose.
- Prime the fuel system according to the engine manual and inspect all connections for leaks before starting the engine.
Troubleshooting and FAQ
Which engines does this filter fit?
It is intended for compatible applications using a 3/8-inch fuel line and is commonly associated with Johnson/Evinrude reference 398319 and Mercury references 802128 and 802128A1. Exact fitment depends on the engine model, year, fuel-system layout, and original filter. Confirm all of these details before ordering.
How often should I replace the fuel filter?
Replacement intervals vary by engine manufacturer, operating conditions, fuel quality, and maintenance schedule. Inspect the filter regularly and follow the service interval in your engine or boat owner's manual. Replace it sooner if it is restricted, damaged, or contaminated.
What are the signs of a clogged fuel filter?
Possible symptoms include hard starting, engine sputtering, loss of power, hesitation, or stalling, particularly under load. These symptoms can have other causes, so inspect the complete fuel system before replacing parts.
Is this a direct replacement for my original filter?
This filter is commonly listed as an aftermarket replacement for several reference numbers, including Johnson/Evinrude 398319 and Mercury 802128A1. Compare the original part number, hose size, flow direction, and physical configuration before installation.
What is the filtration rating?
The stated filtration rating is 10 microns.
Can it be used with ethanol-blended fuel?
The housing and filter are specified for gasoline and ethanol-blended fuels. Always follow the fuel requirements and maintenance guidance for your engine.
Is this an OEM part?
No. This listing is for an aftermarket replacement filter. Johnson/Evinrude, Mercury, Sierra, GLM, Mallory, Wix, and Fram numbers are reference numbers used to help identify potentially compatible applications.
Warranty and returns
Warranty and return eligibility are governed by the applicable seller policy. Contact support before installation if the item does not match the ordered configuration or your original filter.
Safety and Important Information
- Verify the original part number, hose inside diameter, flow direction, and physical dimensions before ordering.
- Do not rely on brand, horsepower, or year alone to confirm fitment.
- Fuel is flammable. Use appropriate safety procedures and dispose of spilled fuel and the old filter properly.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended if you are unfamiliar with marine fuel-system service.
About Sea Sierra
- Marine Parts Focus — Parts and replacement components for marine maintenance applications.
- Application-Conscious Support — Verify part numbers and physical specifications before installation.
- Aftermarket Value — Replacement options for routine service and repair needs.
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