K&N Drop In Air Filter Subaru WRX 2004-2005 | 33-2154

Upgrade your vehicle’s airflow and engine protection with the K&N 33‑2154 Replacement Air Filter — a high-flow, reusable solution engineered for longevity and performance. Designed with a multi-layer cotton gauze media, this air filter improves horsepower and acceleration while offering outstanding contaminant capture.

Built with rugged construction and premium materials, the filter features four layers of cotton gauze treated with a special tacking agent to trap dirt and debris without restricting airflow. With proper vehicle fitment, it installs easily into your factory air box and is engineered to last the lifetime of your vehicle.

Clean once every five years (or up to ~75,000 miles under typical highway conditions) for years of reliable service. Since it’s washable and reusable, it helps reduce waste compared to disposable filters and offers a savings benefit over time. Backed by K&N’s No-Hassle Lifetime Limited Warranty, the 33‑2154 is a dependable choice for performance-oriented drivers.

Key Features & Benefits

• Engineered to increase horsepower and acceleration with optimized airflow

• Durable, premium materials and four-layer cotton gauze media deliver solid contaminant capture

• Washable and reusable design: clean every five years under normal conditions

• Drop-in replacement: fits into your factory air box with minimal hassle

• Eco-friendly: reduces disposable filter waste and offers savings over time

• Lifetime limited warranty for peace of mind

Whether you’re driving daily or pushing your vehicle’s performance envelope, the K&N 33‑2154 Replacement Air Filter gives you enhanced airflow, long-term value, and engine protection — all in one premium package.