ECOGARD XA4877 Premium Engine Air Filter Fits Ford Mustang, Contour COMPATIBLE with 1994-2004 Ford Mustang, 1998-2000 Ford Contour. 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 CA7730 Purolator A34877 WIX 46289 Motorcraft FA1611 OE F4ZZ-9601A. SPECIFICALLY ENGINEERED AND TESTED for Ford OE (original equipment) engine air filter's fit, form, and function.