Uni Multi-Stage Competition Air Filter NU-4037ST
Unsurpassed in airflow, stopping dirt and overall performance
Two-stage air filters come apart for maximum airflow and ultimate cleaning
Most filters feature the Ultra Seal grease groove on the sealing surface
Each fits in stock airbox exactly like OEM filter
Clean easily with grease-cutting dishwashing detergent; just clean, oil and reuse indefinitely
See Lubes section for cleaner and service kit
Made in the U.S.A.