BYD Cabin Air Filter HCE-8121211F-E1 – BYD Han (2020–2025) is engineered for EV-friendly, low-restriction airflow with precision pleats that trap fine particulates without burdening the blower. The rigid, humidity-resistant frame holds shape under thermal swings, locking in a leak-free perimeter seal for steady performance and quieter cabins. Carbon-media options aggressively reduce exhaust smells and ozone for calmer urban driving. OE-accurate sizing and clear airflow arrows enable a fast, tool-light glovebox install that fits right the first time. Refresh annually or by 15–20k km, sooner in dusty or smog-heavy regions, to protect the evaporator, maintain rapid defogging, and ensure consistently fresh, clean interior air.