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K&N KNA-2478 is an Advantage long-life panel engine air filter for the listed Nissan Altima application, designed as a direct replacement in the factory air box. Confirm the exact manufacturer part number and all current specifications before ordering.
Key Features
- Up to 18,000-mile service interval under normal highway driving
- Up to 99 percent filtration efficiency
- Non-woven synthetic panel media
- Approximately 11.438 x 11.375 x 1.125 inches
- One-time-use direct replacement filter
Fitment
Use the verified year, make, and model table below, then confirm the engine, drivetrain, body configuration, factory equipment, and every current manufacturer application note.
| Years | Make | Model |
|---|---|---|
| 2013-2018 | Nissan | Altima |
Specifications
| Brand | K&N Engineering |
|---|---|
| Manufacturer Part Number | KNA-2478 |
| Product Type | Engine Air Filters |
| Fitment Type | Vehicle Specific |
| Condition | New |
| GTIN | 024844406774 |
What's Included
One new K&N Engineering engine air filter identified by manufacturer part number KNA-2478 in the configuration shown. Hardware or companion parts are included only when expressly stated by the manufacturer.
About K&N Engineering
K&N Engineering manufactures automotive performance and replacement parts identified by exact part number, specifications, and published application data.
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Frequently Asked Questions
How do I confirm KNA-2478 is correct?
Use the verified year, make, and model table below, then confirm the engine, drivetrain, body configuration, factory equipment, and every current manufacturer application note.
Are similar-looking parts interchangeable?
No. Match part number KNA-2478, dimensions, configuration, included components, and every current manufacturer note.
What is included with this listing?
One new K&N Engineering engine air filter identified by manufacturer part number KNA-2478 in the configuration shown. Hardware or companion parts are included only when expressly stated by the manufacturer.
Installation
Follow the current K&N Engineering instructions for part number KNA-2478. Verify fit, clearance, system specifications, fastener torque, and safe operation before use. Professional installation is recommended when specialized tools, alignment, calibration, or fabrication are required.
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