Nissan Cabin Air Filter Kit 27277-4M400 – Altima (2002–2006) delivers dependable, OE-spec filtration with all components needed for a confident, tool-light DIY service. Optimized pleat density provides high dust-holding capacity while keeping pressure drop low for steady airflow and rapid windshield clearing. The rigid, moisture-stable frame and precise edges keep a leak-free seal over long intervals. Carbon-media options help neutralize exhaust smells and volatile urban odors. Orientation markings guide quick, correct installation behind the glove box. Replace yearly or by 15–20k km to preserve HVAC efficiency, protect the evaporator core, and elevate everyday comfort with cleaner, quieter air in your early Altima.