Uni Filter NU-4037ST Multi-Stage Competition Air Filter

The Uni Filter NU-4037ST Multi-Stage Competition Air Filter delivers professional-grade filtration for high-performance applications. Engineered as a direct replacement for OEM filters, this filter installs seamlessly into factory air boxes without modification.

Key Features:

• Two-stage filtration system provides superior dirt-trapping capability while maximizing airflow
• Dual-layer foam construction captures fine particles in stage one, larger debris in stage two
• Completely washable and reusable design for long-term cost savings
• Separable two-stage design allows thorough cleaning of both filter elements
• Performs reliably in extreme conditions including mud, dust, and sand
• Drop-in fitment matches OEM filter dimensions exactly

Uni Filter's proven foam technology keeps engines running cleaner longer by trapping contaminants before they reach critical engine components. The washable design eliminates the need for frequent filter replacements, making this an economical choice for racers and enthusiasts who demand maximum engine protection.