Air Filter for Mercury DFI Outboard Engines — 115, 130, 150, 175, 200 and 225 HP
Air Filter for Mercury DFI Outboard Engines — 115, 130, 150, 175, 200 and 225 HP is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Air Filter for Mercury DFI Outboard Engines — 115, 130, 150, 175, 2...
Air Filter for Mercury DFI Outboard Engines — 115, 130, 150, 175, 200 and 225 HP is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket air filter element is designed for specified Mercury DFI outboard engines. It replaces the original Mercury Marine air-filter references 35-853333T and 35-853333 and is listed for selected 2.5L DFI applications from 115 through 225 horsepower. Its direct-replacement design helps maintain clean airflow to the engine without modification.
The applicable Mercury engine listings include V115 DFI, V-135 DFI, V-150 DFI, V-175 DFI, 200 DFI and 225 DFI models. Because fitment depends on the exact engine model and year, compare your engine information and original part number before ordering.
- Direct drop-in replacement for the original air-filter element.
- Designed for the specified Mercury DFI 2.5L outboard applications.
- Helps protect the engine from airborne dirt and debris while supporting proper airflow.
- Aftermarket replacement part; not manufactured by Mercury Marine.
Part Number Matrix
These references identify the replacement relationship documented for this air-filter application.
| Brand or Reference Type | Part Number |
|---|---|
| Mercury Marine original reference | 35-853333T |
| Mercury Marine original reference | 35-853333 |
| Sierra aftermarket reference | 18-7997 |
Engine & Model Compatibility
The following applications are listed for the 35-853333T air-filter reference. Keep the model, horsepower, stroke and year conditions together when confirming fitment.
| Brand | Model | Rated HP | Stroke / Fuel System | Year or Serial Condition | Original Reference |
|---|---|---|---|---|---|
| Mercury | V115 DFI, 2.5L | 115 | 2-Stroke DFI | 2000 | 35-853333T |
| Mercury | V-135 DFI, 2.5L | 135 | 2-Stroke DFI | 1998 and up | 35-853333T |
| Mercury | V-150 DFI, 2.5L | 150 | 2-Stroke DFI | 1998 and up | 35-853333T |
| Mercury | V-175 DFI, 2.5L | 175 | 2-Stroke DFI | 2001 and up | 35-853333T |
| Mercury | 200 DFI | 200 | 2-Stroke DFI | 1998–2002 | 35-853333T |
| Mercury | 225 DFI | 225 | 2-Stroke DFI | 1998–2002 | 35-853333T |
Technical Specs
- Product Type
- Air filter element
- Replacement Type
- Direct drop-in replacement
- Application
- Specified Mercury DFI outboard engines
- Engine Configuration
- Selected 2.5L 2-stroke DFI applications
- Horsepower Range
- 115, 135, 150, 175, 200 and 225 HP applications as listed
- Original References
- 35-853333T and 35-853333
- Aftermarket Reference
- Sierra 18-7997
What’s in the Box
- 1 x aftermarket air filter element
Package contents are limited to the air-filter element. No keys, additional filter elements or other components are specified for this listing.
Installation Notes
- Turn off the engine and allow it to cool completely before servicing.
- Locate the engine air box or air-filter housing.
- Remove the air-box cover according to the engine service instructions.
- Remove the old filter element and note its orientation.
- Clean loose dirt from the housing without allowing debris to enter the intake.
- Install the replacement filter element in the same orientation and ensure it is seated correctly.
- Reinstall and secure the air-box cover before operating the engine.
Troubleshooting & FAQ
How do I confirm that this air filter fits my Mercury engine?
Check that your engine is one of the listed Mercury DFI applications: V115 DFI from 2000; V-135 DFI from 1998 and up; V-150 DFI from 1998 and up; V-175 DFI from 2001 and up; or 200 DFI and 225 DFI from 1998–2002. Also compare the original filter reference with 35-853333T or 35-853333.
Is this filter for all Mercury 115–225 HP engines?
No. The fitment is limited to the specific DFI models and year conditions listed above. The horsepower range alone is not sufficient to confirm compatibility, and this listing should not be used for unrelated EFI, carbureted or Verado applications.
What are common signs that an air filter needs inspection?
Reduced engine performance, difficult starting, rough running or increased fuel consumption can indicate an airflow or maintenance issue. Inspect the filter and follow the engine manufacturer’s service guidance.
Is this a direct replacement?
Yes. For the listed applications, this is intended as a direct drop-in replacement for the original air-filter element. Confirm the model, year and original reference before installation.
Is this an OEM Mercury part?
No. This listing is for an aftermarket replacement air-filter element. Mercury Marine references are shown only to identify the application and replacement relationship.
How should the filter be maintained?
Inspect the filter according to the engine manufacturer’s maintenance schedule and check it more frequently when operating in dusty or debris-heavy conditions. Replace it if it is dirty, damaged or restricted.
Safety & Important Info
- Verify the complete engine model, horsepower, stroke, year and original filter reference before ordering.
- Do not rely on horsepower alone; different Mercury engines may use different air-filter elements.
- Install the filter securely and ensure the air-box cover is properly fastened before starting the engine.
- This is an aftermarket replacement part, not an OEM Mercury component.
About Sea Sierra
- Marine Replacement Parts — We supply replacement components for a range of marine service applications.
- Application-Focused Listings — Product information is organized around documented model, year and part-number conditions.
- Support When Needed — Compare your engine information and original part before ordering, and contact support if you need help interpreting the listed fitment.
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