Oil Filter – Fits Mercury V6 & V8 FourStroke 175-300 HP (Replaces 35-8M0123025)
Oil Filter – Fits Mercury V6 & V8 FourStroke 175-300 HP (Replaces 35-8M0123025) is backordered and will ship as soon as it is back in stock.
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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.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Oil Filter – Fits Mercury V6 & V8 FourStroke 175-300 HP (Replac...
Product Details
This high-performance Oil Filter – Fits Mercury V6 & V8 FourStroke 175-300 HP (Replaces 35-8M0123025) is engineered for Mercury Marine's powerful outboards. It is specifically designed for 175-300 HP V6 (3.4L) and V8 (4.6L) 4-Stroke models from 2010–2023, and also fits the 450 HP V8 4.6L Racing Verado series.
It serves as a direct replacement for Mercury/Quicksilver part numbers 35-8M0123025 and 8M0123025, ensuring a precise fit and reliable performance.
- Features a simple screw-on canister design for straightforward installation.
- Built with a metal housing 50% thicker than standard filters for enhanced durability.
- Includes a corrosion-resistant finish, making it ideal for saltwater environments.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury/Quicksilver | 35-8M0123025 |
| Mercury | 8M0123025 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Mercury Marine engines, this filter fits a range of V6 and V8 FourStroke models, including standard, Verado, and Racing applications as detailed in the compatibility list.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | 3.4L V6 FourStroke | 175 | 4-Stroke | 2010–2023 | 35-8M0123025 | |
| Mercury | 3.4L V6 FourStroke | 200 | 4-Stroke | 2010–2023 | 35-8M0123025 | |
| Mercury | 3.4L V6 FourStroke | 225 | 4-Stroke | 2010–2023 | 35-8M0123025 | |
| Mercury | 3.4L V6 FourStroke | 250 | 4-Stroke | 2010–2023 | 35-8M0123025 | |
| Mercury | 4.6L V8 FourStroke | 200-300 | 4-Stroke | 2015–2023 | 35-8M0123025 | |
| Mercury | 4.6L V8 Verado | 250-300 | 4-Stroke | 2015–2023 | 35-8M0123025 | |
| Mercury | 4.6L V8 Racing | 250-300 | 4-Stroke | 2015–2023 | 35-8M0123025 | Sport Master, Torpedo, and Torque Master applications |
| Mercury | 4.6L V8 Racing | 450 | 4-Stroke | 2015–2023 | 35-8M0123025 | Sport Master and Torpedo applications |
Technical Specs
- Product Type
- Oil Filter
- Installation
- Screw-on Canister
- Connection
- Screw-on
- Housing Material
- Metal (50% thicker than standard filters)
- Dimensions
- Length: 8.0 in, Width: 8.0 in, Height: 9.5 in
- Weight
- 0.32 kg (0.70 lb)
- Filtration
- Precision filtration to screen particles smaller than 1/1000th of an inch
- Brand
- Mercury Precision branded
- Finish
- Corrosion resistant finish suitable for saltwater environments
- Warranty
- 1 year factory warranty against defects and workmanship
What’s in the Box
- 1 x Oil Filter (35-8M0123025)
Installation Notes
- Ensure the engine is off and has cooled down. Place an absorbent mat or drain pan beneath the oil filter to catch any spills.
- Using an appropriate filter wrench, turn the old filter counter-clockwise to loosen and remove it.
- Wipe the engine's filter mounting surface clean, ensuring the old gasket is not stuck to the engine block.
- Lightly lubricate the gasket of the new filter with a thin film of fresh engine oil.
- Carefully thread the new filter onto the mounting point by hand. Turn until the gasket makes firm contact with the engine surface.
- Tighten the filter an additional 3/4 to 1 full turn by hand. Do not use a wrench to tighten, as this can damage the filter or seal.
- Top off engine oil to the correct level, then run the engine for a few minutes and check carefully for any leaks around the filter base.
Important: Some sources have noted that older Mercury-specific filter wrenches may not fit this newer filter design. Please verify you have a compatible removal tool, such as a strap wrench or cap wrench of the correct size.
Troubleshooting & FAQ
Which engines does this oil filter fit?
This filter is designed for a specific range of Mercury Marine outboards, primarily the V6 3.4L (175-250 HP) and V8 4.6L (200-300 HP) FourStroke models from 2010 onwards. It also fits select V8 4.6L Racing engines. Always check the compatibility table to confirm your exact model and year.
How do I know if this is the right filter for my engine?
The most reliable method is to match the part number. This filter replaces Mercury OEM part 35-8M0123025. You can also use the Engine & Model Compatibility table on this page to verify fitment for your specific engine model, horsepower, and year range.
What is the recommended replacement interval for this oil filter?
For optimal engine protection, it is recommended to replace the oil filter every 100 hours of operation or at least once a year, whichever comes first. This should be done as part of a regular oil change service.
My old filter wrench doesn't fit this new filter. Is this normal?
Yes, this can happen. There are reports that Mercury has updated the canister design, and as a result, some older, model-specific cap wrenches may no longer fit. A universal strap-style wrench or a correctly sized socket-style cap wrench is recommended for removal and installation.
What are the signs of a failing or clogged oil filter?
A severely clogged filter can lead to reduced oil pressure, which may trigger a low oil pressure warning light on your console. Other symptoms include a decrease in engine performance, engine overheating, or unusual noises. Regular replacement is key to preventing these issues.
Is this filter any different from the original Mercury OEM part?
While being an aftermarket part, this filter is manufactured to meet or exceed original equipment specifications. It features a heavy-duty housing (50% thicker than standard) and a corrosion-resistant finish for superior durability, especially in saltwater.
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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