Fuel Filter Assembly – Fits Mercury/Mariner 75-115HP (Replaces 35-881538T1, 35-881538T02)
Fuel Filter Assembly – Fits Mercury/Mariner 75-115HP (Replaces 35-881538T1, 35-881538T02) 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 75-115HP (Replaces 35-8...
Product Details
This Fuel Filter Assembly – Fits Mercury/Mariner 75-115HP Outboards is an essential component for maintaining engine health and performance. It is designed for specific Mercury and Mariner 75HP, 80HP, 90HP, 100HP, and 115HP 4-stroke outboard engines manufactured between 2004 and 2011.
This part is a direct replacement for Mercury OEM part numbers 35-881538T1, 35-881538T02, 881538T1, and 881538T02.
- Installation Method: Simple in-line setup
- Fuel Connection: Fits 8mm (5/16") fuel lines
- Construction: Features a durable plastic housing with a paper filtration core.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By |
|---|---|---|
| Mercury | 35-881538T1 | 35-881538T02 |
| Mercury | 881538T1 | 881538T02 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Designed for compatible Mercury and Mariner 4-stroke models. Please verify your engine's serial number against the notes provided for an exact match.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | 4-Stroke | 75 | 4-Stroke | 2004–2006 | 35-881538T1 | Serial Number 0G960500-0T800999 |
| Mercury | 4-Stroke | 75 | 4-Stroke | 2006–2010 | 35-881538T1 | Serial Number 0T801000-1B226999 |
| Mercury | 75 EFI | 75 | 4-Stroke | 2010–2011 | 35-881538T1 | Serial Number 1B172291-1B366822 |
| Mercury | 4-Stroke (Bodensee) | 75 | 4-Stroke | 2004–2006 | 35-881538T1 | Serial Number 0G960500-0T800999 |
| Mercury | 4-Stroke (Bodensee) | 75 | 4-Stroke | 2006–2010 | 35-881538T1 | Serial Number 0T801000-1B226999 |
| Mercury | 80 EFI | 80 | 4-Stroke | 2010–2011 | 35-881538T1 | Serial Number 1B227000-1B366822 |
| Mercury | 4-Stroke | 90 | 4-Stroke | 2004–2006 | 35-881538T1 | Serial Number 0G960500-0T800999 |
| Mercury | 4-Stroke | 90 | 4-Stroke | 2006–2010 | 35-881538T1 | Serial Number 0T801000-1B226999 |
| Mercury | 90 EFI | 90 | 4-Stroke | 2010–2011 | 35-881538T1 | Serial Number 1B172291-1B366822 |
| Mercury | 100 EFI | 100 | 4-Stroke | 2010–2011 | 35-881538T1 | Serial Number 1B227000-1B366822 |
| Mercury | 115 EFI | 115 | 4-Stroke | 2004–2006 | 35-881538T1 | Serial Number 0T178500-0T800999 |
| Mercury | 115 EFI | 115 | 4-Stroke | 2006–2010 | 35-881538T1 | Serial Number 0T801000-1B226999 |
| Mercury | 115 EFI | 115 | 4-Stroke | 2010–2011 | 35-881538T1 | Serial Number 1B227000-1B366822 |
Technical Specs
- Product Type
- Fuel Filter Assembly
- Installation
- In-line
- Fuel Type
- Gasoline
- Connection
- 8mm (5/16")
- Housing Material
- Paper core with plastic housing
- Housing Color
- Black
- Fitting Type
- Barb connection
What’s in the Box
- 1 x Fuel Filter Assembly (Replaces 35-881538T1/35-881538T02)
Installation Notes
- Work in a well-ventilated area away from sparks or flames and wear appropriate safety glasses.
- Disconnect the boat's battery before beginning work.
- Locate the existing fuel filter. Place a shop towel or rag underneath to catch any fuel spillage.
- Use pliers to slide the hose clamps away from the filter's inlet and outlet barbs.
- Carefully twist and pull the fuel lines off the old filter. Note the direction of the flow arrow on the filter body.
- Install the new filter, ensuring the flow arrow points in the same direction as the original (typically toward the engine).
- Securely attach the fuel lines to the new filter and reposition the hose clamps over the barbs.
- Reconnect the battery.
- Prime the fuel system according to your engine manufacturer’s instructions.
- Start the engine and carefully inspect the filter and its connections for any signs of fuel leaks. Tighten connections if necessary.
Troubleshooting & FAQ
How do I confirm this filter fits my engine?
Check your original part number against the references in the Part Number Matrix. Additionally, consult the Engine & Model Compatibility table, paying close attention to your engine's model, year, and serial number range for an exact match.
What are the signs my fuel filter needs replacing?
Common symptoms of a clogged or failing fuel filter include the engine sputtering, stalling at low speeds, a noticeable loss of power, or difficulty starting.
What's the difference between part numbers 35-881538T1 and 35-881538T02?
Part number 35-881538T02 is the direct replacement that superseded the older 35-881538T1. They are functionally identical and fully interchangeable.
What is the recommended replacement interval for this filter?
For optimal engine protection, it's best to replace your fuel filter annually or every 100 hours of operation, whichever comes first. Always refer to your engine's service manual for specific maintenance schedules.
Is this an OEM part?
This listing is an aftermarket replacement (not OEM). It has been engineered to meet or exceed OEM-level specifications with comparable materials and performance. Our parts are manufactured in an ISO 9002 certified facility and are batch-inspected for quality and consistency.
How much is shipping?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free to most locations; expedited options with pricing will appear at checkout where available.
What is the warranty and return policy?
This part is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our full policy page or reach out for instructions.
Safety & Important Info
- Verify images and specifications against 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 quality control.
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