K&N 33-2154 High-Flow Air Filter for 96-08 Subaru Impreza WRX Legacy Forester

Vehicle Fitment

• 1998-2005 Subaru Impreza / GD / GG (All Trims, H4 2.2L EJ22 / H4 2.5L EJ25, AWD) - incl. RS, Outback Sport
• 1999-2005 Subaru Impreza WRX / GD (All Trims, H4 2.0L EJ205 Turbo, AWD)
• 2004-2005 Subaru Impreza WRX STI / GD (All Trims, H4 2.5L EJ257 Turbo, AWD)
• 1996-2004 Subaru Legacy / BH / BE (All Trims, H4 2.2L EJ22 / H4 2.5L EJ25, AWD & FWD)
• 1996-2004 Subaru Liberty (All Trims, H4 2.5L EJ25 - Australian Market)
• 1999-2004 Subaru Forester / SF (All Trims, H4 2.5L EJ25 NA / EJ205 Turbo, AWD)
• 2000-2004 Subaru Outback / BH (All Trims, H4 2.5L EJ25 / H6 3.0L EZ30, AWD)
• 2003-2006 Subaru Baja (All Trims, H4 2.5L EJ251, AWD)
• 2004-2006 Subaru Baja Sport / Baja Turbo (All Trims, H4 2.5L EJ255 Turbo, AWD)

Fitment Notes

• Impreza WRX fitment covers 1999-2005 models with the EJ205 2.0L turbo engine (GD/GG platform)
• Impreza WRX STI fitment confirmed for 2004-2005 with EJ257 2.5L turbo; does not fit 2006+ STI (GE/GH platform) - see K&N 33-2304 for that application
• Legacy fitment covers BE/BH generation (1996-2004); does not fit 2005+ BP/BL Legacy - see K&N 33-2304
• Forester fitment covers the SF-generation (1999-2004) only; does not fit 2003+ SG Forester - see K&N 33-2304
• Outback H6 3.0L fitment confirmed - verify OEM airbox compatibility before ordering
• Subaru Liberty is the Australian market equivalent of the Legacy; fitment confirmed for all applicable variants

Features

• Drop-in replacement - installs directly into the factory airbox with no modifications
• 4-layer oiled cotton gauze media for high airflow and reliable contaminant capture
• Engineered to increase horsepower and acceleration over stock paper filters
• Pre-oiled and ready to install straight out of the box
• Washable and reusable - cleaning interval every 75,000 miles under normal conditions
• Compatible with OEM airbox and factory MAF sensors - no recalibration required
• Reduces long-term filter replacement costs and environmental waste
• Backed by K&N's No-Hassle Lifetime Limited Warranty

Specifications

• Part Number: 33-2154
• Filter Style: Panel Air Filter
• Filter Media: Oiled Cotton Gauze
• Outside Length: 14.5 in (368 mm)
• Outside Width: 6.5 in (165 mm)
• Height: 0.938 in (24 mm)
• Compatible Engine Sizes: H4 2.2L (EJ22), H4 2.0L Turbo (EJ205), H4 2.5L NA (EJ251/EJ253), H4 2.5L Turbo (EJ255/EJ257), H6 3.0L (EZ30)
• Washable: Yes
• Warranty: No-Hassle Lifetime Limited

Included Components

• 1x K&N 33-2154 High-Flow Panel Air Filter

Product Description

The K&N 33-2154 is a washable, reusable drop-in replacement air filter engineered for Subaru's GD/GG/BE/BH/SF platform vehicles - covering the Impreza (including WRX and WRX STI), Legacy, Forester, Outback, Baja, and Australian-market Liberty spanning 1996-2006. Compatible with naturally aspirated and turbocharged EJ-series boxer engines from the 2.2L through the 2.5L EJ257 Turbo, this filter drops directly into the factory airbox without modification and is fully compatible with OEM MAF sensors and engine management systems.

Only needing cleaning every 75,000 miles, the K&N 33-2154 is a cost-effective lifetime upgrade for a wide range of classic Subaru enthusiast and daily-driver platforms. Whether running an Impreza WRX, a Forester XT, or a Legacy Outback 3.0L, this filter delivers improved airflow and throttle response as a direct drop-in, without voiding the factory warranty.