Inline Fuel Filter – Fits Johnson/Evinrude & Mercury 3/8" (Replaces 398319, 802128A1)
Inline Fuel Filter – Fits Johnson/Evinrude & Mercury 3/8" (Replaces 398319, 802128A1) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Inline Fuel Filter – Fits Johnson/Evinrude & Mercury 3/8" ...
Product Details
This Inline Fuel Filter – Fits Johnson/Evinrude & Mercury 3/8" (Replaces 398319, 802128A1) is designed for a broad range of Johnson/Evinrude outboard engines (4-250 HP, 1988–2004) and various Mercury outboard models. It is fully compatible with 3/8 inch (10mm) inside diameter fuel hoses, ensuring clean fuel flow to protect vital engine components.
This part serves as a direct interchange for Johnson/Evinrude 398319, Mercury 802128A1/802128, Sierra 18-7831, GLM 40160, Mallory 9-37960, Wix 33033, and Fram G3/G15.
- Installs inline on the fuel line between the tank and engine.
- Features a 10-micron filter element to trap harmful contaminants.
- Sonically sealed plastic housing is approved for use with ethanol-blended fuels.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| 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 & Model Compatibility
Confirm your engine model/year in the table below.
For Johnson/Evinrude engines, this filter fits a wide array of models from 1988 to 2004. Sierra recommends replacement every 50 hours or annually.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Johnson/Evinrude | Various models | 4-250 | 2-Stroke & 4-Stroke | 1988–2004 | 398319 | Sierra recommends replacement every 50 hours or annually |
For Mercury/Mariner engines, this filter is compatible with various models that use a 3/8" fuel line.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | Various models | Various | 2-Stroke & 4-Stroke | 802128, 802128A1 | Fits engines with 3/8" fuel line |
Technical Specs
- Product Type
- Inline Fuel Filter
- Installation
- Inline, Universal
- Filtration Rating
- 10 micron
- Fuel Type
- Gasoline, Ethanol blends
- Connection
- 3/8" (10mm) hose barbs
- Housing Material
- Plastic with metal end caps
- Housing Color
- Clear/Translucent with black ends
- Weight
- 59g (2.08 oz)
- Fitting Type
- Barbed hose connection
- Warranty
- 1 year typical (manufacturer dependent)
- Other Technical Attributes
- Sonically sealed end caps, approved for ethanol-based fuels
What’s in the Box
- 1 x Inline Fuel Filter (398319/802128A1)
Installation Notes
- Locate the existing fuel filter on the 3/8" fuel line between the fuel tank and the engine.
- Place a catch pan or rag below the filter to collect any spilled fuel.
- Following safety precautions for handling fuel, loosen the hose clamps on both sides of the old filter.
- Carefully detach the fuel lines, noting the direction of the fuel flow arrow printed on the filter body.
- Install the new filter, ensuring its arrow points in the same direction of fuel flow (towards the engine).
- Securely re-attach the fuel lines to the new filter barbs and tighten the clamps.
- Prime the fuel system according to your engine's manual and carefully check for any leaks before starting the engine.
Troubleshooting & FAQ
Which engines does this filter fit?
This filter is designed for a wide range of Johnson/Evinrude outboard motors (4-250 HP, 1988–2004) and various Mercury models that use a 3/8" (10mm) fuel line. Always check your part number to confirm.
How often should I replace my fuel filter?
For optimal engine protection and performance, it is recommended to replace the fuel filter annually or every 50 hours of use, whichever occurs first.
What are the signs of a clogged fuel filter?
Common symptoms include engine sputtering, loss of power, difficulty starting, or stalling, particularly at higher RPMs. Replacing the filter is a common fix for these issues.
Is this a direct replacement for my OEM filter?
Yes, this is a direct aftermarket replacement for several part numbers, including Johnson/Evinrude 398319 and Mercury 802128A1. Refer to the Part Number Matrix for a full list of cross-references.
What is the filtration rating of this filter?
This filter has a 10-micron rating, which effectively removes small contaminants from the fuel to protect sensitive injector and carburetor components.
Can this filter be used with ethanol-blended fuels?
Yes, the housing and filter media are designed to be fully compatible with modern gasoline and ethanol-blended fuels (such as E10).
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). It has been built to OEM-level specifications with comparable materials. It is manufactured in an ISO 9002 facility and batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options will appear at checkout where available.
Warranty & returns
This product is covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, please contact our support team with your order details. Returns are accepted within our standard window for items that are unused and in their 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.
Payment & Security
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