ECOGARD XA6143 Premium Engine Air Filter Fits BMW X1, 528i, 528i xDrive, Z4 COMPATIBLE with 2012-2015 BMW X1, 2012-2016 BMW 528i, 2012-2016 BMW 528i xDrive, 2010-2016 BMW Z4. 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 CA10994 Purolator A46143 WIX 49208 OE 13 71 7 582 908. SPECIFICALLY ENGINEERED AND TESTED for BMW OE (original equipment) engine air filter's fit, form, and function.