Ramair Performance Foam Replacement Air Filter for BMW 1.6 N45 & 2.0 N43 (80mm)Upgrade your BMWs intake system with the Ramair Performance Foam Replacement Air Filter for N45 and N43 engines. Designed as a direct fit replacement for the restrictive OEM paper filter, this high performance panel filter improves airflow, increases throttle response, and delivers superior filtration to protect your engine. Crafted with Ramairs twin layer Aeriform foam and reinforced by a stainless steel cage, it combines maximum durability with