K&N 33-5064 High-Flow Air Filter for 2017-2025 Subaru Impreza/Forester/WRX

Vehicle Fitment

• 2017-2026 Subaru Impreza (H4 2.0L, FWD/AWD)
• 2016-2019 Subaru Impreza (H4 1.6L, AWD) - Non-US markets
• 2018-2025 Subaru Crosstrek (H4 2.0L, AWD)
• 2021-2025 Subaru Crosstrek (H4 2.5L, AWD)
• 2018-2022 Subaru XV (H4 1.6L & 2.0L, AWD) - International markets
• 2019-2025 Subaru Ascent (H4 2.4L Turbo, AWD)
• 2019-2025 Subaru Forester (H4 2.5L, AWD)
• 2020-2025 Subaru Legacy (H4 2.4L Turbo & 2.5L, AWD)
• 2020-2025 Subaru Outback (H4 2.4L Turbo & 2.5L, AWD)
• 2022-2025 Subaru WRX (H4 2.4L Turbo, AWD)

Fitment Notes

• WRX fitment applies to the 2022-2025 VB-generation WRX (FA24 engine) only - does not fit the 2015-2021 VA-generation WRX or WRX STI
• The Subaru XV is the international-market equivalent of the Crosstrek, sold in Asia, Europe, and Australia
• Impreza is available in both FWD and AWD; all other US-market models listed are AWD standard
• Does not fit the 2022-2025 BRZ - that model uses K&N 33-5060

Features

• Multi-layer oiled cotton gauze media delivers up to 50% more airflow than standard paper filters
• Drop-in design fits directly into the factory airbox - no modifications required
• Washable and reusable - engineered to last the lifetime of the vehicle
• Pre-oiled and ready to install straight out of the box
• Compatible with OEM sensors and vehicle electronics
• Up to 50,000-mile service intervals under normal driving conditions
• Backed by K&N's 10-Year/Million Mile Limited Warranty

Specifications

• Part Number: 33-5064
• Filter Type: Panel (Drop-In Replacement)
• Filter Media: Oiled Cotton Gauze
• Color: Red
• Length: 9.125 in. (232 mm)
• Width: 8.656 in. (220 mm)
• Height: 1.563 in. (40 mm)
• Service Interval: Up to 50,000 miles under normal driving conditions

Included Components

• 1x K&N 33-5064 High-Flow Panel Air Filter

Product Description

The K&N 33-5064 is a direct-fit high-flow replacement air filter engineered for a broad range of Subaru models sharing a common airbox platform, including the Impreza, Crosstrek, Ascent, Forester, Legacy, Outback, and WRX across naturally aspirated and turbocharged flat-four engine configurations. Engine sizes covered include 1.6L, 2.0L, 2.4L Turbo, and 2.5L depending on model and year. It replaces the factory paper element with a layered oiled cotton gauze design that flows significantly more air, supporting improved throttle response and engine efficiency across the entire Subaru SGP (Subaru Global Platform) lineup.

Installation is a straightforward drop-in swap into the existing factory airbox with no cutting, drilling, or adapters required. Unlike disposable filters, the 33-5064 is fully washable and reusable using K&N's Recharger cleaning kit, making it a permanent, cost-effective upgrade backed by K&N's 10-Year/Million Mile Limited Warranty. WRX owners should confirm their model year is 2022 or newer (VB generation), as earlier VA-generation WRX and WRX STI models are not compatible with this filter.