ECOGARD XA5557 Premium Engine Air Filter Fits Mazda RX-8 / Dodge Viper COMPATIBLE with 2004-2011 Mazda RX-8, 2008-2017 Dodge Viper. 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 CA9912 Purolator A45557 WIX 46835 OE N3H1-13-Z40. SPECIFICALLY ENGINEERED AND TESTED for Mazda, Dodge OE (original equipment) engine air filter's fit, form, and function.