Oil Filter – Fits Mercury/Mariner 75-150HP 4-Stroke (Replaces 35-877761K01, 35-877761Q01, 18-7758)
Oil Filter – Fits Mercury/Mariner 75-150HP 4-Stroke (Replaces 35-877761K01, 35-877761Q01, 18-7758) 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
Oil Filter – Fits Mercury/Mariner 75-150HP 4-Stroke (Replaces 35-87...
Product Details
This replacement Oil Filter – Fits Mercury/Mariner 75-150HP 4-Stroke Outboards is engineered for reliable engine protection. It is designed for Mercury/Mariner 75-150HP 4-Stroke (FourStroke and EFI) outboards, specifically within the serial number range of 1B366823-2B094995.
It serves as a direct replacement for Mercury part numbers 35-877761K01 and 35-877761Q01, as well as aftermarket equivalents like Sierra 18-7758 and Mallory 9-57822.
- Easy spin-on installation for quick maintenance.
- Features 10-micron filtration media to capture harmful contaminants.
- Equipped with an anti-drain back valve to ensure oil is available on startup.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury | 35-877761K01 |
| Mercury | 35-877761Q01 |
| Sierra | 18-7758 |
| Mallory | 9-57822 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Mercury/Mariner engines, pay close attention to the serial number range provided for 75, 90, and 115 HP models to ensure correct fitment.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Mercury | 75HP 4-Stroke | 75 | 4-Stroke | 35-877761K01 | Serial range 1B366823-2B094995 |
| Mercury | 80HP 4-Stroke | 80 | 4-Stroke | 35-877761K01 | |
| Mercury | 90HP 4-Stroke | 90 | 4-Stroke | 35-877761K01 | Serial range 1B366823-2B094995 |
| Mercury | 100HP 4-Stroke | 100 | 4-Stroke | 35-877761K01 | |
| Mercury | 115HP 4-Stroke | 115 | 4-Stroke | 35-877761K01 | Serial range 1B366823-2B094995 |
| Mercury | 135HP 4-Stroke | 135 | 4-Stroke | 35-877761K01 | |
| Mercury | 150HP EFI 4-Stroke | 150 | 4-Stroke | 35-877761K01 |
Technical Specs
- Product Type
- Oil Filter
- Installation
- Spin-on
- Filtration Rating
- 10 micron
- Connection
- Direct thread to engine
- Housing Material
- Heavy steel wall with epoxy coating
- Housing Color
- Black/Blue (varies by brand)
- Weight
- 0.4 kg (0.89 lbs)
- Fitting Type
- Direct thread
- Thread Size
- 22mm x 1.5
- Other Technical Attributes
- Anti-drain back valve
- Warranty
- Sierra: Lifetime warranty on materials and workmanship
What’s in the Box
- 1 x Oil Filter (Replaces 35-877761K01/35-877761Q01)
Installation Notes
- Place a drain pan under the existing oil filter to catch any spills.
- Using an oil filter wrench, loosen and unscrew the old filter. Remove it from the engine.
- Wipe the filter mounting base on the engine clean with a lint-free cloth.
- Apply a thin layer of fresh motor oil to the gasket of the new filter.
- Carefully screw the new filter onto the mounting base by hand until the gasket makes contact.
- Tighten the filter an additional 3/4 to one full turn by hand. Do not overtighten.
- Top off engine oil if necessary, then start the engine and check for any leaks around the filter base.
Troubleshooting & FAQ
How do I confirm this filter fits my specific engine?
This filter fits most Mercury/Mariner 75-150HP FourStroke outboards. The best way to confirm is by checking your engine's serial number against the 1B366823-2B094995 range, which is confirmed for 75, 90, and 115 HP models. You can also match the part number from your old filter to the cross-references listed, such as 35-877761K01.
What is the recommended replacement interval for this oil filter?
Always follow your engine manufacturer's recommended service schedule. A general guideline for marine engines is to replace the oil filter every 100 hours of operation or at least once a year, whichever occurs first.
What are the signs of a clogged or failing oil filter?
Common signs may include a noticeable drop in oil pressure (triggering a low oil warning), reduced engine performance, or a sputtering engine. If you notice these symptoms, inspect and replace your filter as part of your diagnostics.
What benefit does the anti-drain back valve provide?
The anti-drain back valve prevents oil from draining out of the filter and back into the oil pan when the engine is turned off. This ensures that engine components are lubricated immediately upon the next startup, significantly reducing wear and tear.
Is this an OEM filter or an aftermarket part?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials and manufactured in an ISO 9002 facility, with batch-inspections for consistency.
How fast is shipping and what does it cost?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options will appear at checkout where available for your location.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for items that are unused and in their original condition. See our 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.
Payment & Security
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