The Motorsport24 CSL Racing Airbox combines carbon fiber construction with an integrated kidney grille intake for maximum E46 M3 performance. This competition-grade component channels cool, high-velocity air directly to your engine while the sculpted intake design reduces thermal buildup during aggressive driving. The advanced airflow geometry enhances volumetric efficiency for measurable horsepower and torque gains. Installation requires angling your radiator for optimal fitment and clearance. Carbon fiber durability withstands track abuse while maintaining minimal weight. Engineered for drivers who demand factory CSL-level sophistication with genuine performance improvements. A serious upgrade for those committed to extracting every advantage from their M3.