All Vance & Hines VO2 air cleaners deliver, improved engine performance but the polycarbonate window of the VO2 Insight additionally offers a look inside the working engine. Housed in a precision-machined billet aluminum cover and assembled with stainless racing-grade ARP hardware. Comes with a high flow washable air filter and the patent pending Force Velocity Stack to maximize performance gains. Complete with installation hardware and instructions. - Improved performance over stock - CNC machined billet aluminum cover - Force velocity stack for maximum flow and ease of installation - High flow oiled washable air filter element
