Aftermarket Oil Filter for Mercury Verado 135, 150 & 175 HP 4-Stroke Outboards – Replaces 35-877767K01
Aftermarket Oil Filter for Mercury Verado 135, 150 & 175 HP 4-Stroke Outboards – Replaces 35-877767K01 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Aftermarket Oil Filter for Mercury Verado 135, 150 & 175 HP 4-S...
Aftermarket Oil Filter for Mercury Verado 135, 150 & 175 HP 4-Stroke Outboards – Replaces 35-877767K01 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket oil filter is listed for selected Mercury Verado 135, 150 and 175 HP 4-stroke outboards. It is a spin-on replacement filter for the engine oil system and is intended for applications using the 24 mm x 1.5 mounting thread.
The filter is supplied as a single oil filter. It is identified as an aftermarket replacement associated with Mercury Mariner applications and cross-references the Mercury part numbers shown below.
- Spin-on canister design for routine oil-filter replacement.
- 24 mm x 1.5 thread specification as listed in the referenced filter catalog.
- Aftermarket replacement for selected Mercury oil-filter applications.
- Confirm the engine serial-number range and the original filter number before installation.
Part Number Matrix
These are the customer-facing manufacturer and aftermarket references associated with this filter. Part-number references do not replace a complete fitment check.
| Brand or Reference Type | Part Number |
|---|---|
| Mercury | 35-877767K01 |
| Mercury | 35-896546T |
| Mercury | 8M0123025 |
| Mercury | 8M0176312 |
| Aftermarket reference | 18-7921 |
Engine & Model Compatibility
The engine listed applications below identify the referenced Mercury oil filter in selected Verado four-cylinder applications. Because fitment is divided by serial-number range, verify the complete engine model and serial number before ordering.
| Brand | Model | Rated HP | Stroke | Serial or Application Condition | Referenced Part No. |
|---|---|---|---|---|---|
| Mercury | 135 Verado, 4-cylinder | 135 | 4-Stroke | 1B2270001 through 1B381711 | 35-877767K01 |
| Mercury | 135 Verado, 4-cylinder | 135 | 4-Stroke | 1B381712 through 1B517158 | 35-877767K01 |
| Mercury | 135 Verado, 4-cylinder | 135 | 4-Stroke | 1B517159 and up; catalog diagrams distinguish additional serial conditions | 35-877767K01 |
| Mercury | 135 Verado, 4-cylinder | 135 | 4-Stroke | 0P419487 through 0P464487 | 35-877767K01 |
| Mercury | 135 Verado, 4-cylinder | 135 | 4-Stroke | 0P464488 through 0P514868 | 35-877767K01 |
| Mercury | 135 Verado, 4-cylinder | 135 | 4-Stroke | 0P514869 and up | 35-877767K01 |
| Mercury | 150 Verado, 4-cylinder | 150 | 4-Stroke | Catalog-listed serial ranges include 1B227000 through 1B381711, 1B381712 through 1B517158, and later ranges; verify the exact serial number | 35-877767K01 |
| Mercury | 175 Verado, 4-cylinder | 175 | 4-Stroke | Catalog-listed serial ranges include 1B227000 through 1B381711, 1B381712 through 1B517158, and later ranges; verify the exact serial number | 35-877767K01 |
Important: The available catalog evidence confirms specific 135, 150 and 175 HP Verado applications. Do not assume fitment for every Mercury 4-stroke engine or for a different horsepower rating without checking the engine serial number, original filter and service documentation.
Technical Specifications
- Product Type
- Aftermarket oil filter
- Application
- Selected Mercury Mariner and Mercury Verado 4-stroke outboard applications
- Installation Type
- Spin-on canister
- Thread Specification
- 24 mm x 1.5
- Primary Mercury Reference
- 35-877767K01
- Additional Mercury References
- 35-896546T, 8M0123025 and 8M0176312
- Aftermarket Reference
- 18-7921
- Quantity
- One filter
What's in the Box
- 1 x Aftermarket oil filter
Installation Notes
- Allow the engine to cool as appropriate and prepare a work area to collect residual oil.
- Remove the old filter and clean the filter mounting surface.
- Make sure the old gasket has been removed and that the new filter gasket is clean.
- Apply a light film of clean engine oil to the new gasket.
- Install the filter by hand until the gasket contacts the mounting surface, then tighten according to the engine manufacturer's service instructions.
- After installation, check the oil level and inspect the filter area for leaks while following the engine service procedure.
Always use the engine manufacturer's specified oil type, oil quantity and filter-installation procedure. Do not rely on a generic turn count when the service manual provides a specific instruction.
Troubleshooting & FAQ
How do I confirm that this filter fits my engine?
Compare your original filter number with the references listed on this page, then verify the complete engine model, horsepower, 4-stroke configuration and serial-number range. The catalog evidence specifically identifies selected Mercury Verado 135, 150 and 175 HP four-cylinder applications.
Is this an OEM Mercury filter?
No. This listing is for an aftermarket replacement oil filter. Mercury part numbers are provided only as application and cross-reference references.
What aftermarket reference is associated with this filter?
This listing associates this product with aftermarket reference 18-7921. Confirm the physical filter, thread specification and engine application before installation.
What is the filter thread specification?
The referenced filter catalog lists a 24 mm x 1.5 thread specification.
How often should the oil filter be replaced?
Replace the oil filter at the interval specified in your engine owner's or service manual. Oil-filter replacement is commonly performed with an oil change, but the manufacturer's maintenance schedule takes priority.
What should I do if the new filter leaks?
Stop operation, verify that the old gasket was removed, confirm that the new gasket is seated correctly, check for damage and reinstall or replace the filter according to the service manual. Do not operate the engine with an oil leak.
Does one order include a filter kit?
No. This product is a single oil filter, not a multi-filter kit and not an oil-change bundle.
Shipping speed & cost
Shipping options, delivery estimates and applicable charges are shown at checkout and may vary by destination.
Returns and product support
For return eligibility, deadlines and instructions, see SeaSierra’s Refund Policy. Contact SeaSierra before ordering if you need product-specific warranty information.
Safety & Important Information
- Verify the engine model, horsepower, stroke, serial number and original filter reference before purchase.
- Do not use a number listed on this page alone to establish fitment for a different engine family.
- This is an aftermarket replacement, not an OEM Mercury component.
- Use proper spill-control procedures and dispose of used oil and filters in accordance with local regulations.
- Professional installation is recommended when you are not familiar with marine-engine maintenance.
About Sea Sierra
- Marine replacement parts selected for practical maintenance applications.
- Customer-facing cross-reference information to help identify the correct replacement.
- Support focused on accurate part identification and responsible installation.
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