Injen Air Filter

Injen Air Filters: Race-Proven Filtration Technology for Street and Track

When it comes to engine protection and performance, few names carry as much credibility as Injen Technology. Rooted in a rich history of racing and street performance engineering, Injen has built its reputation by refusing to compromise between airflow and filtration efficiency — and their air filter lineup is a direct reflection of that philosophy.

Two Distinct Filter Technologies to Match Your Needs

Injen offers two core filter technologies, each engineered for a specific type of driver. The choice between them comes down to your maintenance preferences and performance priorities.

• SuperNano-Web Dry Air Filters (X-Series BB): Injen's flagship filter technology uses a proprietary dual-layer media construction — a high-flow base layer topped with a highly efficient Nano membrane — to maximize airflow while trapping harmful dirt and debris. Because this is a dry filter, it requires no filter oil whatsoever, eliminating the risk of over-oiling contaminating your MAF sensor. Cleaning is simple: a light blast of compressed air restores performance without any mess or chemicals.
• 8-Layer Oiled Cotton Gauze Filters (X-Series BR): For drivers who prefer a traditional oiled media approach, Injen's 8-layer cotton gauze filters use a tightly layered construction paired with a proprietary filter oil containing highly advanced tackifiers designed to capture as much dirt and contaminants as possible, while still allowing maximum airflow through to the engine.

Lab Tested. Race Proven.

Injen doesn't just make claims — they validate them. Filter media is independently lab tested by an outside facility to verify accuracy and filtration performance. Beyond the lab, Injen pushed these filters to their limits in some of the world's most punishing environments, including racing the Baja 1000 in Mexico and testing across the sand dunes of the Middle East. That real-world validation is what separates Injen filters from competitors who rely on spec sheets alone.

Designed to Work With Injen Intake Systems

Injen air filters are engineered as direct fits for Injen's own SP Short Ram, Evolution (EVO), and PF cold air intake systems, making them the ideal replacement filter when it's time for service. Many sizes are also available as universal fitment options for custom intake builds. For added wet-weather protection, compatible Hydroshield water repellent pre-filters are available in black or red to pair with select filter models — keeping moisture out without restricting flow.

Backed by a Limited Lifetime Warranty

Injen Technology backs every air filter with a Limited Lifetime Warranty to the original purchaser against defects in materials and workmanship. Defective filters are replaced at no charge, giving performance enthusiasts peace of mind alongside proven performance gains.

Whether you're replacing a worn filter on an existing Injen intake system or building a custom cold air setup from scratch, browse the full selection of Injen air filters and explore everything else Injen Technology has to offer.