Inline Fuel Filter – Fits Mercury/Mariner Outboard 30-225 HP (Replaces 816296Q2, 35-816296Q2)
Inline Fuel Filter – Fits Mercury/Mariner Outboard 30-225 HP (Replaces 816296Q2, 35-816296Q2) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Inline Fuel Filter – Fits Mercury/Mariner Outboard 30-225 HP (Repla...
Product Details
This 5/16" (8mm) Inline Fuel Filter is designed for a wide range of outboard engines, including Mercury and Mariner models from 30 to 225 HP (1980–2001), various 2-stroke Johnson/Evinrude (BRP) motors (1980–2001), and select Yamaha models. It provides essential filtration to prevent contaminants from reaching sensitive engine components, ensuring reliable performance.
It directly replaces Mercury part numbers 816296Q2 and 35-816296Q2, along with equivalents from BRP, Yamaha, Sierra, GLM, and Mallory.
- Installs in-line on any 5/16" (8mm) inside diameter fuel line.
- Features a transparent housing for easy visual inspection of fuel flow and contaminants.
- Easily replaceable design requires no special tools for maintenance.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury | 816296Q2 |
| Mercury | 35-816296Q2 |
| Mercury | 35-816296-4 |
| Mercury | 35-816296K2 |
| Mercury | 35-16494-1 |
| BRP/Johnson/Evinrude | 398327 |
| Yamaha | 65W-24251-10-00 |
| Sierra | 18-7830 |
| GLM | 40155 |
| GLM | 40150 |
| Mallory | 9-37959 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Mercury/Mariner owners: This filter fits a wide variety of 2-stroke and 4-stroke engines manufactured between 1980 and 2001. Cross-reference your engine's horsepower and cylinder count below.
For BRP (Johnson/Evinrude) owners: Compatibility extends to many 2-stroke models from 1980–2001 using the specified OEM part number.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury/Mariner | Various | 30-90 | 3-cylinder | 1980–2001 | 35-816296Q2 | Fits 2-cylinder 20-25 HP models also |
| Mercury/Mariner | Various | 40-125 | 4-cylinder | 1980–2001 | 35-816296Q2 | |
| Mercury/Mariner | Various | 90-225 | 6-cylinder | 1980–2001 | 35-816296Q2 | |
| Mercury/Mariner | EFI Models | 40-50 | 2-stroke | 1993–2001 | 35-816296Q2 | |
| Mercury/Mariner | EFI Models | 75-115 | 4-stroke | 1998–2001 | 35-816296Q2 | |
| Johnson/Evinrude | Various | 30-225 | 2-stroke | 1980–2001 | 398327 |
Technical Specs
- Product Type
- Inline Fuel Filter
- Installation
- In-line (installed in fuel line between tank and engine)
- Filtration Rating
- 42 micron
- Fuel Type
- Gasoline, Gasoline/Oil Mix
- Connection
- 5/16" (8mm) inside diameter fuel line
- Housing Material
- Plastic
- Housing Color
- Clear/Transparent
- Dimensions
- 4.0" H x 10.0" W x 12.0" L
- Weight
- 2.5 pounds (1.13 kg)
- Fitting Type
- Barbed
- Thread Size
- N/A (barbed connection)
- Warranty
- Manufacturer's standard warranty
- Other Technical Attributes
- Easily replaceable without tools
What’s in the Box
- 1 x Inline Fuel Filter (replaces 816296Q2/35-816296Q2)
Installation Notes
- Turn off the fuel supply and relieve any pressure in the fuel line.
- Locate the old fuel filter and place a rag underneath to catch any spilled fuel.
- Loosen the clamps securing the fuel lines to the old filter and carefully detach them.
- Note the fuel flow direction indicated by an arrow on the new filter.
- Attach the fuel lines to the new filter in the correct orientation and secure them with clamps.
- Turn the fuel supply back on and check for any leaks before starting the engine.
Troubleshooting & FAQ
How do I know if this fuel filter fits my engine?
This filter is designed for 5/16" (8mm) fuel lines on Mercury, Mariner, Johnson/Evinrude, and Yamaha outboards. Please check the "Engine & Model Compatibility" and "Part Number Matrix" sections to confirm your specific engine model and original part number.
What is the recommended replacement interval?
For optimal engine protection, we recommend replacing the fuel filter annually or every 100 hours of operation, whichever comes first. Refer to your engine's service manual for specific guidance.
What are the signs of a clogged fuel filter?
Common symptoms include engine hesitation, sputtering, loss of power, difficulty starting, or stalling, especially at high speeds. You may also see debris in the transparent filter housing.
Is the transparent housing durable?
Yes, the filter features a durable plastic housing designed to withstand the marine environment. The clear body allows for quick visual inspection of fuel quality and filter condition without removal.
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.
Payment & Security
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