Fuel Filter – Fits Mercury/Mariner 9.9-30HP EFI FourStroke (Replaces 35-8M0134466, 8M0134466)
Fuel Filter – Fits Mercury/Mariner 9.9-30HP EFI FourStroke (Replaces 35-8M0134466, 8M0134466) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Fuel Filter – Fits Mercury/Mariner 9.9-30HP EFI FourStroke (Replace...
Fuel Filter – Fits Mercury/Mariner 9.9-30HP EFI FourStroke (Replaces 35-8M0134466, 8M0134466) is backordered and will ship as soon as it is back in stock.
Product Details
This replacement Fuel Filter fits Mercury/Mariner 9.9-30HP EFI FourStroke Outboards manufactured from 2017 and newer (serial numbers 0R833820 and up). It is designed to effectively remove contaminants from the fuel system, ensuring reliable engine performance and longevity.
It serves as a direct interchange for Mercury/Quicksilver part numbers 35-8M0134466 and 8M0134466.
- Installs internally under the engine cowl.
- Features a translucent bowl to easily monitor fuel and check for debris.
- Designed for use with modern gasoline/petrol fuel systems.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.
| Brand | Part Number |
|---|---|
| Mercury/Quicksilver | 35-8M0134466 |
| Mercury/Quicksilver | 8M0134466 |
Engine & Model Compatibility
Confirm your engine model and year in the table below to ensure correct fitment.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | FourStroke EFI | 9.9 | 4-Stroke | 2017 and newer | 35-8M0134466 | Serial numbers 0R833820 and up |
| Mercury | FourStroke EFI | 15 | 4-Stroke | 2017 and newer | 35-8M0134466 | Serial numbers 0R833820 and up |
| Mercury | FourStroke EFI | 20 | 4-Stroke | 2017 and newer | 35-8M0134466 | Serial numbers 0R833820 and up |
| Mercury | FourStroke EFI | 25 | 4-Stroke | 2017 and newer | 35-8M0134466 | Serial numbers 0R833820 and up |
| Mercury | FourStroke EFI | 30 | 4-Stroke | 2017 and newer | 35-8M0134466 | Serial numbers 0R833820 and up |
Technical Specs
- Product Type
- Fuel Filter
- Installation
- Under cowl/Internal
- Fuel Type
- Gasoline/Petrol
- Housing Material
- Translucent plastic bowl with metal components
- Housing Color
- Clear/Translucent bowl
- Dimensions
- Length: 50.8mm (2.00"), Width: 76.2mm (3.00"), Height: 101.6mm (4.00")
- Weight
- 0.064kg (0.14 lb)
- Warranty
- 1 year against defects and workmanship
What’s in the Box
- 1 x Fuel Filter (35-8M0134466/8M0134466)
Installation Notes
- Ensure the engine is off, cool, and in a well-ventilated area.
- Consult your owner's manual to relieve fuel system pressure safely.
- Place an absorbent rag under the existing filter to catch any fuel spillage.
- Carefully disconnect the fuel lines from the old filter.
- Remove the old filter from its mounting bracket.
- Install the new filter, ensuring the arrow indicating fuel flow direction is correctly oriented.
- Securely reconnect the fuel lines to the new filter.
- Prime the fuel system as per your engine manufacturer's instructions.
- Start the engine and carefully inspect for any leaks around the filter and connections.
Troubleshooting & FAQ
How do I know if this fuel filter fits my engine?
This filter is specifically for Mercury Marine 9.9-30HP EFI FourStroke outboards from 2017 and newer (serial numbers 0R833820 and up). The best way to confirm is to match your existing part number to one of the direct replacements: 35-8M0134466 or 8M0134466.
What are the signs of a failing fuel filter?
Common symptoms include engine sputtering, loss of power, difficulty starting, or stalling, particularly under acceleration. The translucent bowl may also show visible debris or water contamination.
How often should I replace my outboard fuel filter?
For optimal performance and engine protection, it is recommended to replace the fuel filter annually or every 100 hours of use, whichever comes first. Refer to your engine's service manual for the specific maintenance schedule.
What is the benefit of the translucent bowl?
The clear bowl allows for quick and easy visual inspection of your fuel. You can spot water, dirt, and other contaminants before they can cause significant engine problems, making it a valuable diagnostic feature.
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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