Water Separating Fuel Filter – Fits Mercury/MerCruiser 4.2L V8 TDI 335-370 Diesel Engines (Replaces 35-8M6002390)
Water Separating Fuel Filter – Fits Mercury/MerCruiser 4.2L V8 TDI 335-370 Diesel Engines (Replaces 35-8M6002390) 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
Water Separating Fuel Filter – Fits Mercury/MerCruiser 4.2L V8 TDI ...
Product Details
This Water Separating Fuel Filter – Fits Mercury/MerCruiser 4.2L V8 TDI 335-370 Diesel Engines (Replaces 35-8M6002390) is designed for robust performance in marine diesel environments. It is engineered for Mercury/MerCruiser 4.2L V8 TDI 335-370HP Diesel engines, covering both MCM and MIE variants with serial numbers CMC000200 and newer.
This filter serves as a direct replacement for Mercury/MerCruiser part numbers 35-8M6002390 and 8M6002390.
- Features a simple spin-on installation.
- Designed specifically for use with diesel fuel.
- Ensures clean fuel delivery to protect your engine.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury/MerCruiser | 35-8M6002390 |
| Mercury/MerCruiser | 8M6002390 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For MerCruiser applications, verify your model, horsepower, and serial number range (especially for 370HP models) to ensure a correct match.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| MerCruiser | MCM 4.2L V8 TDI | 335 | 4-Stroke | 35-8M6002390 | Diesel engine |
| MerCruiser | MIE 4.2L V8 TDI | 335 | 4-Stroke | 35-8M6002390 | Diesel engine |
| MerCruiser | MCM 4.2L V8 TDI | 370 | 4-Stroke | 35-8M6002390 | Diesel engine, CMC000200+ |
| MerCruiser | MIE 4.2L V8 TDI | 370 | 4-Stroke | 35-8M6002390 | Diesel engine, CMC000200+ |
Technical Specs
- Product Type
- Water Separating Diesel Fuel Filter
- Installation
- Spin-on
- Fuel Type
- Diesel
- Dimensions
- Length: 9.5, Width: 9.5, Height: 17.6
- Weight
- 0.11 lb (0.05 kg)
What’s in the Box
- 1 x Fuel Filter (35-8M6002390)
Installation Notes
- Ensure the engine is cool and turned off. Place a drain pan below the old filter to catch any spilled fuel.
- Unscrew and remove the old filter using an appropriate filter wrench.
- Thoroughly clean the filter mounting base, making sure the sealing surface is free of any old gasket material or dirt.
- Lightly lubricate the gasket on the new filter with a thin layer of clean diesel fuel or motor oil.
- Carefully screw the new filter on by hand until the gasket makes contact with the mounting surface.
- Tighten the filter an additional three-quarters to one full turn by hand. Do not overtighten, as this can damage the gasket.
- Prime the fuel system according to your engine manufacturer's service manual to remove air from the system.
- Start the engine and carefully inspect for any leaks around the filter. If a leak is found, stop the engine immediately and verify the installation.
Troubleshooting & FAQ
How do I know if this filter will fit my engine?
This filter is designed for Mercury/MerCruiser 4.2L V8 TDI 335-370HP diesel engines. Please check the Engine & Model Compatibility table and confirm that your specific model and horsepower match. For 370HP models, it is crucial to verify your engine's serial number is CMC000200 or newer.
What are the signs of a clogged or failing fuel filter?
Common symptoms include difficulty starting the engine, engine hesitation or sputtering (especially under load), reduced power output, and inconsistent idling. If you experience these issues, a blocked fuel filter is a likely cause.
How often should this fuel filter be replaced?
Replacement intervals depend on fuel quality, usage hours, and storage conditions. As a general guideline, it is best to replace your water-separating fuel filter annually or every 100-200 hours of operation, whichever comes first. Always consult your engine's service manual for the recommended maintenance schedule.
Do I need to pre-fill the filter with fuel before installing it?
For most modern diesel engines, it is not recommended to pre-fill the filter, as this can introduce contaminants directly into the sensitive high-pressure fuel system. Install the filter empty and then prime the fuel system as per the engine manufacturer's instructions to fill the filter safely.
Why is the serial number important for the 370 HP models?
Manufacturers sometimes update engine components or systems mid-production. The serial number breakpoint of CMC000200 and up for the 370HP models indicates a specific design for which this filter is required. Using the wrong filter on an incompatible system can lead to fuel delivery problems or leaks.
Is this part identical to the OEM Mercury/MerCruiser filter?
This is an aftermarket part, not an original Mercury/MerCruiser component. It has been engineered to meet or exceed OEM specifications for fit, form, and function, providing a reliable and cost-effective alternative.
What is the difference between OEM and aftermarket parts?
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.
What are the shipping speed and 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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