Mercury Fuel Filter Kit – Fits MerCruiser 4 & 6 Cylinder Engines (Replaces 35-49088A2, 49088Q2)
Mercury Fuel Filter Kit – Fits MerCruiser 4 & 6 Cylinder Engines (Replaces 35-49088A2, 49088Q2) 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
Mercury Fuel Filter Kit – Fits MerCruiser 4 & 6 Cylinder Engine...
Product Details
This Mercury Fuel Filter Kit is designed for MerCruiser 4 & 6 cylinder inline engines with carburetors, ensuring clean fuel delivery for optimal engine performance. It effectively filters out contaminants to protect sensitive fuel system components.
This kit is a direct replacement for Mercury part numbers 35-49088A2 and 35-49088Q2, and also interchanges with Johnson/Evinrude 312456 and Sierra 18-7860.
- Designed for simple inline installation.
- Compatible with gasoline-fueled 4 & 6 cylinder inline carburetor engines.
- Engineered to meet or exceed OEM specifications for filtration and flow.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By |
|---|---|---|
| Mercury | 35-49088A2 | 35-49088Q2 |
| Johnson/Evinrude | 312456 | |
| Sierra | 18-7860 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This filter is commonly used on MerCruiser 120, 140, and 160 HP inline engines as well as other 4 and 6 cylinder models with inline carburetors.
It also fits certain Johnson/Evinrude (OMC) stern drive applications that specify the cross-referenced part number.
| Brand | Model | OEM Part No. | Notes |
|---|---|---|---|
| MerCruiser | 120 | 35-49088A2/49088Q2 | For inline 4 cylinder engines |
| MerCruiser | 140 | 35-49088A2/49088Q2 | For inline 4 cylinder engines |
| MerCruiser | 160 | 35-49088A2/49088Q2 | For 6 cylinder GM engines |
| MerCruiser | Other 4 & 6 Cylinder Models | 35-49088A2/49088Q2 | For models with inline carburetors |
| Johnson/Evinrude (OMC) | 312456 | For compatible OMC Stern Drive applications |
Technical Specs
- Product Type
- Fuel Filter Kit
- Installation
- Inline
- Fuel Type
- Gasoline
- Dimensions
- Height: 50 mm, Width: 100 mm, Length: 120 mm
- Weight
- 0.02 kg (0.044 lb)
- Warranty
- 1 Year (from aftermarket suppliers)
- Other Technical Attributes
- Designed for 4 & 6 cylinder inline carburetors
What’s in the Box
- 1 x Fuel Filter (Replaces 35-49088A2/49088Q2)
Installation Notes
- Turn off the engine and shut off the fuel supply valve.
- Place an approved container or absorbent rags under the fuel filter to catch any spilled fuel.
- Carefully loosen the clamps and disconnect the fuel lines from both ends of the old filter. Note the direction of the fuel flow arrow.
- Remove the old filter from its mounting bracket or position.
- Install the new filter, ensuring the fuel flow arrow points in the correct direction (towards the engine).
- Securely reconnect the fuel lines and tighten the clamps.
- Turn the fuel supply back on and prime the system if necessary.
- Inspect for any leaks at the connections before starting the engine. Once started, check again for leaks.
Troubleshooting & FAQ
How do I confirm if this filter fits my engine?
First, check our Part Number Matrix to see if your old part number is listed. Then, review the Engine & Model Compatibility table. This filter is designed for MerCruiser 4 & 6 cylinder inline engines (like the 120, 140, and 160 models) and also replaces Johnson/Evinrude part 312456 for certain OMC stern drives.
What are common symptoms of a failing fuel filter?
Signs that your fuel filter needs replacement include engine hesitation, sputtering, rough idling, difficulty starting, or a general loss of power, especially under load.
How often should I replace my fuel filter?
As a general guideline, replace your fuel filter annually or every 100 hours of engine use, whichever comes first. Refer to your engine’s service manual for manufacturer-specific recommendations.
Is this a direct replacement for the Mercury 35-49088A2?
Yes, this is an aftermarket replacement for Mercury part 35-49088A2 and its successor, 35-49088Q2. It is designed to match the fit, form, and function of the original.
Can I install this fuel filter myself?
Yes, changing an inline fuel filter is a common maintenance task for boat owners with basic mechanical skills. However, always work in a well-ventilated area, take precautions against fuel spills, and consult a professional if you are unsure.
What is the difference between an OEM and an aftermarket part?
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.
How fast do you ship and what does it 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?
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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