Water Separating Fuel Filter – Fits Mercury Marine 175–300 HP V6 & V8 FourStroke Outboards (Replaces 35-8M0106635)
Water Separating Fuel Filter – Fits Mercury Marine 175–300 HP V6 & V8 FourStroke Outboards (Replaces 35-8M0106635) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Water Separating Fuel Filter – Fits Mercury Marine 175–300 HP V6 &a...
Water Separating Fuel Filter – Fits Mercury Marine 175–300 HP V6 & V8 FourStroke Outboards (Replaces 35-8M0106635) is backordered and will ship as soon as it is back in stock.
Product Details
This high-efficiency Mercury Water Separating Fuel Filter is engineered for a direct fit on Mercury Marine 175–300 HP V6 and V8 FourStroke outboards manufactured between 2010 and 2023, including select Pro XS, Seapro, Verado, and Racing models. It provides essential protection by removing water and other contaminants from the fuel supply, ensuring optimal engine performance and longevity.
Serves as a direct interchange for Mercury Marine part numbers 35-8M0106635 and 8M0106635, as well as aftermarket equivalents like Sierra 18-7519 and EMP 35-37810.
- Designed for simple inline installation in your boat's fuel system.
- Features advanced 10-micron filter media that is over 98% efficient at removing particulates.
- Effectively separates water from E10-compatible gasoline to prevent fuel system corrosion and engine damage.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Mercury Marine | 35-8M0106635 | OEM Reference |
| Mercury Marine | 8M0106635 | OEM Reference |
| Sierra | 18-7519 | Aftermarket |
| EMP | 35-37810 | Aftermarket |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This filter is specifically for Mercury Marine V6 and V8 FourStroke outboards. Verify your HP, model, and serial number where applicable.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | 3.4L V6 | 175 | 4-Stroke | 2010–2023 | 35-8M0106635 | Including Pro XS models |
| Mercury | 3.4L V6 | 200 | 4-Stroke | 2010–2023 | 35-8M0106635 | Including Pro XS, Seapro models |
| Mercury | 3.4L V6 | 225 | 4-Stroke | 2010–2023 | 35-8M0106635 | Including Pro XS, Seapro models |
| Mercury | 3.4L V6 | 250 | 4-Stroke | 2010–2023 | 35-8M0106635 | Serial #2B529482 & up |
| Mercury | 4.6L V8 | 250 | 4-Stroke | 2015–2023 | 35-8M0106635 | Pro XS, Seapro, Verado models |
| Mercury | 4.6L V8 | 250 | 4-Stroke | 2015–2023 | 35-8M0106635 | Racing models, Serial #1E080500 & up |
| Mercury | 4.6L V8 | 300 | 4-Stroke | 2015–2023 | 35-8M0106635 | Pro XS, Seapro, Verado models |
| Mercury | 4.6L V8 | 300 | 4-Stroke | 2015–2023 | 35-8M0106635 | Racing models, Serial #1E080500 & up |
| Mercury | 4.6L V8 | 450 | 4-Stroke | 2015–2023 | 35-8M0106635 | Racing models |
Technical Specs
- Product Type
- Water Separating Fuel Filter
- Installation
- Inline
- Filtration Rating
- 10 micron (98% efficiency)
- Fuel Type
- Gasoline (E10 compatible)
- Housing Color
- Black
- Working Pressure
- 75 PSI
- Warranty
- 12 months (aftermarket versions)
What’s in the Box
- 1 x Water Separating Fuel Filter (Replaces 35-8M0106635)
Installation Notes
- Shut off the engine and allow it to cool completely. Turn off the fuel supply if a shutoff valve is available.
- Place a suitable container or absorbent towels under the existing filter to catch any fuel spillage.
- Carefully disconnect the fuel lines from the old filter. Note the direction of the flow arrow on the unit.
- Remove the old filter from its mounting bracket. Keep it upright to minimize spills.
- Install the new filter into the bracket, making sure the flow arrow points in the correct direction (towards the engine).
- Securely reconnect the fuel lines to the new filter.
- Prime the fuel system as recommended in your engine's service manual to fill the filter with fuel.
- Once primed, start the engine and carefully inspect the filter and all connections for any signs of leaks.
Troubleshooting & FAQ
How do I confirm this filter fits my specific engine?
This filter is made for Mercury Marine 175–300 HP V6 & V8 FourStroke outboards (2010–2023). To ensure a perfect match, please compare your existing part number to 35-8M0106635 and check the detailed "Engine & Model Compatibility" table in this listing. Pay close attention to any serial number requirements.
What is the recommended replacement interval?
For optimal engine protection and fuel system health, it is best practice to replace your water-separating fuel filter every 100 hours of operation or at least once per season, whichever comes first.
What are the symptoms of a clogged or failing fuel filter?
Common signs that your filter needs replacement include engine hesitation, loss of power, sputtering (especially at high speeds), difficulty starting, or stalling. Water-in-fuel alarms may also be triggered on equipped models.
Can I clean and reuse this filter?
No, this is a disposable, single-use filter. Once it is clogged or has separated a significant amount of water, it must be replaced to ensure proper filtration and fuel flow.
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.
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