Panel Air Filter (Wesfil) - EVO4-9

Keep your EVO4-9 performing at its best with a filter that combines reliability, durability, and precision engineering. Ideal for daily driving or spirited weekend runs. Paper Filter: Excellent filtration, very low risk of engine wear from dust. Summary Table Feature Paper Filter (Wesfil) K&N Filter Filtration High (fine particles) Moderate (slightly more airflow) Performance Gain Minimal Slight (improved airflow) Maintenance Replace regularly Wash & re-oil Lifespan 10k–20k km approx. 100k+ km with maintenance Cost Low per unit High upfront, economical long-term Engine Protection Excellent Good, minor risk in extreme dust