MicronAir Particle Cabin Air Filter, fits Lincoln LS 2000-2002 requires 1 filter, Jaguar S-Type 2000-2002 requires 1 filter, and Ford Thunderbird 2002-2005 requires 1 filter. Traps Harmful pollutants before they reach your vehicle's interior and provides cleaner air for allergy and asthma sufferers. Vehicle manufacturer recommends filter be changed every 6 to 12 months.