Aftermarket Air Filter for Mercury Mariner 75–115 HP EFI Four-Stroke Outboards – Replaces 35-8M0082911, 35-897575T01 and 35-897575T02
Aftermarket Air Filter for Mercury Mariner 75–115 HP EFI Four-Stroke Outboards – Replaces 35-8M0082911, 35-897575T01 and 35-897575T02 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
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Aftermarket Air Filter for Mercury Mariner 75–115 HP EFI Four-Strok...
Aftermarket Air Filter for Mercury Mariner 75–115 HP EFI Four-Stroke Outboards – Replaces 35-8M0082911, 35-897575T01 and 35-897575T02 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket air filter is designed for Mercury Mariner 75, 80, 90, 100 and 115 HP EFI four-stroke outboard applications. It is a direct-replacement style filter for the integrated air-fuel module and helps keep airborne dirt and debris away from the engine intake.
The filter is listed as an aftermarket replacement for Sierra Marine reference 18-7998. It is associated with Mercury references 35-8M0082911, 8M0082911, 35-897575T01, 897575T01, 35-897575T02 and 897575T02.
- Single replacement air filter; not a kit.
- Designed for Mercury Mariner 75–115 HP EFI four-stroke outboards.
- Direct replacement format for the listed air-filter references.
- For gasoline-fueled marine outboard engines.
Part Number Matrix
Use the following references to compare your existing filter before ordering. Part-number references do not replace confirmation of the engine model and serial-number range.
| Brand or Supplier | Reference Number |
|---|---|
| Mercury | 35-8M0082911 |
| Mercury | 8M0082911 |
| Mercury | 35-897575T01 |
| Mercury | 897575T01 |
| Mercury | 35-897575T02 |
| Mercury | 897575T02 |
| Sierra Marine | 18-7998 |
Engine & Model Compatibility
The company fitment record lists Mercury Mariner air-filter applications for 75, 80, 90, 100 and 115 HP EFI engines. Catalog listings identify the corresponding Mercury models as four-stroke EFI engines. Confirm the complete model designation and serial number before installation.
| Brand | Model | Rated HP | Fuel System | Stroke | Catalog Serial Condition | Reference |
|---|---|---|---|---|---|---|
| Mercury Mariner | 75 EFI | 75 | EFI | 4-Stroke | 1B366823 through 2B094995 | 35-8M0082911 |
| Mercury Mariner | 80 EFI | 80 | EFI | 4-Stroke | 1B366823 through 2B094995 | 35-8M0082911 |
| Mercury Mariner | 80 EFI | 80 | EFI | 4-Stroke | 0P459572 through 2B094995 | 35-8M0082911 |
| Mercury Mariner | 90 EFI | 90 | EFI | 4-Stroke | 1B366823 through 2B094995 | 35-8M0082911 |
| Mercury Mariner | 100 EFI | 100 | EFI | 4-Stroke | 1B366823 through 2B094995 | 35-8M0082911 |
| Mercury Mariner | 100 EFI | 100 | EFI | 4-Stroke | 0P459572 through 2B094995 | 35-8M0082911 |
| Mercury Mariner | 115 EFI | 115 | EFI | 4-Stroke | 1B366823 through 2B094995 | 35-8M0082911 |
Technical Specs
- Product Type
- Air Filter
- Application
- Mercury Mariner 75–115 HP EFI outboards
- Stroke
- Four-stroke
- Fuel Type
- Gasoline
- Installation
- Direct replacement
- Product Status
- Aftermarket replacement; not an OEM-branded component
What’s in the Box
- 1 x aftermarket air filter
Installation Notes
- Make sure the engine is switched off, cool and secured before beginning work.
- Remove the engine cowl according to the instructions for your specific outboard.
- Locate the integrated air-fuel module and its air-filter access cover.
- Open or remove the cover using the correct procedure for the engine model.
- Remove the old filter and note its orientation and seating position.
- Clean loose dirt from the housing with a clean, dry cloth; do not allow debris to enter the intake.
- Install the replacement filter in the same orientation, ensuring it is fully seated.
- Reinstall and secure the housing cover, then replace the engine cowl.
- Before operating the boat, check that all covers and fasteners are secure.
Troubleshooting & FAQ
How do I confirm that this air filter fits my engine?
Confirm that your engine is a Mercury or Mercury Mariner 75, 80, 90, 100 or 115 HP EFI four-stroke model. Compare the existing filter and its reference number with the Part Number Matrix, and verify the complete engine model and serial number against the compatibility information.
Which reference numbers are associated with this filter?
The listed Mercury references are 35-8M0082911, 8M0082911, 35-897575T01, 897575T01, 35-897575T02 and 897575T02. The listed aftermarket supplier reference is Sierra Marine 18-7998.
What are signs that an air filter may need replacement?
A filter that is heavily contaminated, damaged or no longer sealing correctly should be replaced. Reduced engine performance or poor running can have several causes, so consult the engine service information before diagnosing the filter as the sole cause.
Is this an OEM part?
No. This is an aftermarket replacement air filter. Mercury and Sierra Marine numbers are provided only as application and reference numbers.
Does this product include a filter housing or other engine parts?
No. The package contains one replacement air filter only. The housing, cover and other engine components are not included.
What are your shipping speeds and costs?
We ship worldwide. Typical transit time is 5–15 days for most regions, and standard shipping is free. If available for your location, expedited shipping options and their costs will be shown at checkout.
What is the warranty and return policy?
Returns are accepted within the applicable standard policy window for unused items in their original packaging. Please contact support with your order information if the item arrives damaged or if you need return instructions.
Safety & Important Info
- Always verify the engine model, EFI configuration, stroke and serial number before purchase.
- Compare the replacement filter with the original part before installation. Do not install it if the shape, sealing surface or fit differs.
- This is an aftermarket replacement component and is not manufactured or branded by Mercury Marine.
- Follow the engine manufacturer’s service instructions and use professional assistance when required.
About Sea Sierra
- Marine Replacement Parts — We supply aftermarket components for common marine service applications.
- Global Fulfillment — We offer free standard delivery to most regions with typical transit times of 5–15 days.
- Application-Focused Listings — Reference numbers and fitment information are provided to help customers compare replacement parts before ordering.
Payment & Security
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