Fuel Filter Assembly – Fits Mercury/Mariner 30-60 HP 4-Stroke (Replaces 35-879884T, 879884T)
Fuel Filter Assembly – Fits Mercury/Mariner 30-60 HP 4-Stroke (Replaces 35-879884T, 879884T) 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
Fuel Filter Assembly – Fits Mercury/Mariner 30-60 HP 4-Stroke (Repl...
Product Details
This Fuel Filter Assembly – Fits Mercury/Mariner 30-60 HP 4-Stroke Outboards is designed for 3 & 4-cylinder EFI engines that utilize a screw-on type filter bowl mounted under the cowl. It effectively removes contaminants from fuel to protect your engine's sensitive components.
It serves as a direct replacement for Mercury/Mariner part numbers 35-879884T, 879884T, and 879884.
- Engineered for under-cowl, inline installation.
- Features a translucent bowl to visually inspect for fuel content and debris.
- Provides 20-micron filtration suitable for gasoline fuel systems.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury/Mariner | 35-879884T |
| Mercury/Mariner | 879884T |
| Mercury/Mariner | 879884 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This filter is designed for a range of Mercury & Mariner EFI and 4-stroke outboard models. Please check your specific serial number or existing part to ensure a correct match.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Mercury | 30 HP EFI | 30 | 4-Stroke | 35-879884T | FUEL PUMP application |
| Mercury | 30 HP | 30 | 4-Stroke | 35-879884T | 1C456300 & Up, FUEL PUMP application |
| Mercury | 35 HP JET | 35 | 4-Stroke | 35-879884T | 1C453840 & Up, FUEL PUMP application |
| Mercury | 40 HP EFI | 40 | 4-Stroke | 35-879884T | Various serial ranges, FUEL PUMP application |
| Mercury | 40 HP EFI Sea Pro | 40 | 4-Stroke | 35-879884T | 1C453840 & Up, FUEL PUMP application |
| Mercury | 40 HP EFI JET | 40 | 4-Stroke | 35-879884T | 1C051324 - 1C453839, FUEL PUMP application |
| Mercury | 50 HP EFI | 50 | 4-Stroke | 35-879884T | Various serial ranges, FUEL PUMP application |
| Mercury | 50 HP | 50 | 4-Stroke | 35-879884T | 7E51413VZ 2010, FUEL PUMP application |
| Mercury | 60 HP EFI | 60 | 4-Stroke | 35-879884T | Various serial ranges, FUEL PUMP application |
| Mercury | 60 HP | 60 | 4-Stroke | 35-879884T | 7E60413VZ 2010, 7E60452IZ 2007, FUEL PUMP application |
| Mercury | 60 HP Sea Pro | 60 | 4-Stroke | 35-879884T | 1C453840 & Up, FUEL PUMP application |
| Mercury | 60 HP Formula | 60 | 4-Stroke | 35-879884T | 1C104574 & Up, FUEL PUMP application |
| Mercury | 60R Racing | 60 | 4-Stroke | 35-879884T | 1C615064 & Up, FUEL PUMP application |
Technical Specs
- Product Type
- Cartridge Type Fuel Filter Assembly
- Installation
- Under-cowl, inline
- Filtration Rating
- 20 micron
- Fuel Type
- Gasoline
- Connection
- Inline fuel line
- Housing Material
- Plastic with translucent bowl
- Housing Color
- Clear/White
- Fitting Type
- Screw-on bowl design
- Features
- Features a translucent bowl to view fuel content and debris
What’s in the Box
- 1 x Cartridge Fuel Filter Assembly (35-879884T)
Installation Notes
- Ensure the engine is off and cool. Relieve pressure from the fuel system if required by your service manual.
- Place a rag or container under the old filter to catch any fuel spillage.
- Disconnect the fuel lines from the old filter assembly. Note their orientation.
- Unscrew and remove the old filter assembly from its mounting bracket.
- Install the new filter assembly, ensuring it is securely mounted.
- Reconnect the fuel lines to their correct positions on the new filter.
- Prime the fuel system according to your engine's manual to fill the new filter with fuel.
- Start the engine and check carefully for any leaks around the filter and its connections.
Troubleshooting & FAQ
How do I confirm this filter fits my specific engine model?
The best method is to compare the part number (35-879884T, 879884T, 879884) from your old filter to the ones listed. You can also consult our compatibility table, but always verify against your engine's service manual or physical part, as serial number ranges can have variations.
What is the advantage of the clear, translucent bowl?
The clear bowl allows for quick visual inspection of the fuel system. You can easily see if there is water, dirt, or other debris in your fuel, which helps diagnose fuel quality issues before they cause engine damage.
What are the signs that this fuel filter needs to be replaced?
Common signs include engine hesitation, loss of power, difficulty starting, or stalling, especially under load. Visually, if you see significant debris or water collected in the bowl, it's time for a replacement.
How often should this fuel filter be replaced?
As a general guideline, marine fuel filters should be replaced every 100 hours of operation or at least once a year, whichever comes first. Refer to your engine's service manual for the recommended service interval.
Can I just clean the filter element instead of replacing the whole assembly?
No, this is a cartridge-style filter and is not designed to be cleaned or reused. Cleaning cannot effectively remove the microscopic particles trapped within the filter media, and attempting to do so can damage it, leading to fuel system contamination.
What is the difference between this aftermarket part and an OEM original?
This is an aftermarket part designed to function as a direct replacement for the OEM version. It's manufactured to meet or exceed original equipment specifications for fit, form, and function, using comparable materials and quality control processes, but at a more competitive price point.
What are my shipping options and how much do they cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
What is the warranty and return policy for this part?
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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