K&N 33-2075 Air Filter for 1999-2008 Subaru Baja/Forester/Impreza/Outback

Vehicle Fitment

• 1999 Subaru Impreza, 2.5L Flat-4
• 2004-2005 Subaru Impreza (including Impreza WRX)
• 2003-2008 Subaru Forester, 2.0L / 2.5L Flat-4 (including Forester Turbo, 2004-2006)
• 2004-2006 Subaru Baja
• 2004 Subaru Outback

Fitment Notes

• One retailer additionally lists this filter as compatible with the 2013-2017 Suzuki Swift, 2014-2018 Suzuki S-Cross, and 2016-2020 Suzuki Vitara, but this was not corroborated by K&N's official listing or other sources - confirm compatibility for Suzuki models directly with K&N before ordering
• Confirm your specific model year and engine (2.0L or 2.5L) before ordering, as coverage varies by trim within some model years

Features

• Layered, oiled cotton gauze media engineered to improve airflow and capture contaminants
• 4 layers of premium cotton gauze treated with a tacking agent to trap contaminants
• Washable and reusable - designed to last the life of the vehicle
• Only needs cleaning approximately every 50,000 miles (80,000 km)
• Pre-oiled and ready to drop directly into the factory air box
• Reduces landfill waste compared to disposable paper filters
• Backed by K&N's No-Hassle Lifetime Limited Warranty
• Works with original equipment manufacturer vehicle electronics

Specifications

• Filter Shape: Panel
• Filter Material: Cotton Gauze
• Grade Type: Performance
• Engine Compatibility: 2.0L and 2.5L Flat-4
• Washable: Yes

Included Components

• 1x K&N 33-2075 Panel Air Filter

Product Description

The K&N 33-2075 is a washable, reusable panel air filter designed as a direct drop-in replacement for Subaru's boxer-engine lineup, covering the Impreza, Forester, Baja, and Outback across model years 1999 through 2008. Built from layered, oiled cotton gauze, it's engineered to improve airflow while maintaining strong filtration across both the 2.0L and 2.5L flat-4 engine variants.

As a reusable filter, the 33-2075 is designed to last the life of the vehicle rather than requiring periodic replacement, needing only occasional cleaning roughly every 50,000 miles. It's backed by K&N's No-Hassle Lifetime Limited Warranty, offering long-term value over repeated disposable filter purchases.

This filter is a confirmed fit across Subaru's naturally aspirated and turbocharged boxer engines of this era, including the Forester Turbo and Impreza WRX. Owners should confirm their specific model year and engine displacement before ordering, since coverage can vary by trim within a given model year.