ECOGARD XA5373 Premium Engine Air Filter Fits Hyundai Sonata / Kia Optima, Magentis COMPATIBLE with 1999-2005 Hyundai Sonata, 2001-2006 Kia Optima, 2001-2007 Kia Magentis. IMPROVE PERFORMANCE by changing your vehicle's air filter at least every 12,000 miles (or as recommended in your car owner's manual); to ensure your vehicle's engine has the clean and efficient air flow it needs for fast acceleration and long term power. AVOID INCREASED ENGINE WEAR caused by dirty air intake filters that may allow damaging particles to get into the engine. FACTORY FIT FOR EASY INSTALLATION. Replaces: FRAM CA8766 Purolator A25373 WIX 42797 OE 28113-37101. SPECIFICALLY ENGINEERED AND TESTED for Hyundai, Kia OE (original equipment) engine air filter's fit, form, and function.