ECOGARD XA5304 Premium Engine Air Filter Fits 1999-2005 Mazda Miata COMPATIBLE with 1999-2005 Mazda Miata. 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 CA8601 Purolator A25304 WIX 42486 OE FS05-13-Z40. SPECIFICALLY ENGINEERED AND TESTED for Mazda OE (original equipment) engine air filter's fit, form, and function.