Water Separating Fuel Filter – Fits Mercury Marine D7.3L/270 Diesel (Replaces 35-808275)
Water Separating Fuel Filter – Fits Mercury Marine D7.3L/270 Diesel (Replaces 35-808275) 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).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Water Separating Fuel Filter – Fits Mercury Marine D7.3L/270 Diesel...
Product Details
This high-performance Water Separating Fuel Filter – Fits Mercury Marine D7.3L/270 Diesel (Replaces 35-808275) is engineered for Mercury Marine 7.3L (BRAVO & MIE) Diesel NAV 444 V-8 engines (270 HP), specifically for models from 1994–1996. It ensures clean fuel delivery by effectively removing water and contaminants, protecting your diesel engine from damage.
This filter serves as a direct interchange for Mercury Marine 35-808275, Sierra 18-7873, and FRAM PS6554A.
- Designed for diesel fuel applications.
- Features a simple spin-on installation.
- Includes one fuel filter element as shown.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury Marine | 35-808275 |
| Sierra | 18-7873 |
| FRAM | PS6554A |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Mercury Marine engines, please verify your model, year, and serial number range to ensure a perfect fit.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury Marine | D7.3L/270 (BRAVO & MIE) DIESEL NAV 444 V-8 | 270 | 4-Stroke | 1994–1996 | 35-808275 | Serial Number 0F060000 & Up |
Technical Specs
- Product Type
- Water Separating Fuel Filter
- Installation
- Spin-on
- Fuel Type
- Diesel
- Connection
- Spin-on
- Dimensions
- 16.0" L × 11.0" W × 12.0" H
- Weight
- 0.71 kg (1.56 lbs)
What’s in the Box
- 1 x Water Separating Fuel Filter (Replaces 35-808275)
Installation Notes
- Shut off the fuel supply and place a catch pan under the old filter.
- Unscrew and remove the old fuel filter. Be prepared for some fuel spillage.
- Clean the filter mounting base, ensuring the sealing surface is free of old gasket material and debris.
- Apply a light coat of clean diesel fuel or motor oil to the gasket of the new filter.
- Screw the new filter on by hand until the gasket makes contact with the mounting base.
- Tighten the filter an additional 3/4 to 1 full turn by hand. Do not overtighten.
- Restore the fuel supply and prime the fuel system according to the engine manufacturer's instructions.
- Start the engine and check for any leaks around the filter.
Troubleshooting & FAQ
How do I know if this filter fits my engine?
This filter is designed for Mercury Marine D7.3L/270 Diesel (NAV 444 V-8) engines from 1994–1996. Please check the Part Number Matrix and Engine Compatibility table on this page to confirm it matches your specific model and original part number (35-808275).
What is the difference between a standard fuel filter and a water-separating one?
A water-separating fuel filter is crucial for diesel engines. It not only filters out particulate contaminants but also separates and traps water present in the fuel, preventing it from reaching sensitive fuel system components and causing corrosion or damage.
How often should I replace this fuel filter?
Replacement intervals depend on fuel quality, engine hours, and operating conditions. As a general guideline, we recommend replacing your water separating fuel filter at least once per season or every 100 hours of operation, whichever comes first. Refer to your engine's service manual for specific recommendations.
What are the signs of a clogged or failing fuel filter?
Common symptoms include loss of engine power, difficulty starting, rough idling, or engine stumbling under load. If you notice any of these issues, inspect and replace your fuel filter promptly to avoid fuel starvation and potential engine damage.
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.
Payment & Security
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