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K&N 33-2304 High-Flow Air Filter - Subaru Impreza WRX STI Forester Legacy Outback XV
K&N 33-2304 High-Flow Air Filter - Subaru Impreza WRX STI Forester Legacy Outback XV
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Overview
The genuine K&N 33-2304 High-Flow replacement panel air filter is designed as a direct drop-in upgrade for the original factory airbox on selected Subaru vehicles. Its pre-oiled, layered cotton-gauze media is washable and reusable, providing long service life without altering the standard airbox.
It is a popular Subaru performance air filter for compatible Impreza, WRX, STI, Forester, Legacy, Outback, XV/Crosstrek, Levorg and Tribeca applications. Always confirm the part number or dimensions against the filter currently fitted before ordering.
Key Features
- Genuine K&N High-Flow replacement engine air filter
- Designed to improve airflow, acceleration and performance
- Up to 99% filtration efficiency; efficiency varies by application
- Four layers of woven, oiled cotton media
- Washable, reusable and supplied pre-oiled ready to install
- Quick drop-in fitment to the original factory airbox
- Cleaning interval of up to 75,000 miles under normal highway driving conditions
- K&N No-Hassle Lifetime Limited Warranty, subject to K&N terms and limitations
Technical Specification
| Brand | K&N |
|---|---|
| Manufacturer Part Number | 33-2304 |
| Product Type | Replacement high-flow panel engine air filter |
| Condition | New |
| Filter Media | Layered, oiled cotton gauze |
| Washable / Reusable | Yes |
| Pre-oiled | Yes |
| Approximate Dimensions | 222 × 217 × 24 mm |
| Installation | Drop-in replacement for the original factory airbox |
| Country of Manufacture | USA |
Subaru Applications
K&N 33-2304 is used on selected versions of the following Subaru model families:
- Impreza
- Impreza WRX
- WRX / STI
- Forester
- Legacy
- Outback
- XV / Crosstrek
- Levorg
- Tribeca
OE Cross References
Common Subaru reference numbers associated with this filter application:
- 16546AA090
- 16546AA10
- 16546AA10A
- 16546AA120
- 16546AA12A
- 16546AA90
- 46051FG000
Fitment / Compatibility Advice
Vehicle listings can vary by model year, engine, market and production changes. Please compare part number 33-2304, the OE reference and the approximate dimensions with the filter currently fitted. If you are unsure, send us your registration number or VIN before ordering and we will help check the application.
This is a genuine K&N aftermarket replacement product. It is not a Subaru-branded OEM part. Performance, filtration, service-interval and warranty statements are manufacturer claims and remain subject to K&N conditions and application.
