100% quality assurance tested, more responsive, less expensive, easier to install. Remove factory filter and HVAC filter system, reduces vehicle weight and improves overall engine bay cooling. Prevents dirt and debris from entering the engine and causing potentially expensive damage. A yearly replacement of your filter ensures dust, pollen, , and pollution stay out of your vehicle's interior, breathe easier, and healthier. Application: For 1 Series E81/E87 models all years. For 1 Series E82 Coupe All Models including 1M 08-13 For 1 Series E88 Convertible 08-13 For 3 Series E90 Sedan All Models including M 06-11 For 3 Series E91 Touring All Models 06-11 For 3 Series E92 Coupe All Models including M 06-13 For 3 Series E93 Convertible All Models including M 06-13 For E84 X1 All E Chassis Models 10-15 Vehicle compatibility charts are for REFERENCE ONLY. Check your vehicle with Part Number below to match your needs. Installation Instructions: Remove the DME cover and brake the fluid side cover. Loosen the screw, remove the HVAC filter. Turn the clockwise to loosen, zip tie them out. Remove the sensor. Remove the screw, lift up on the cowl and pull towards the front of the car. Place the filter in the correct hole, tighten the bolts.. Note: No installation guides are included, we highly recommend to professional installation. Any damage during installation will not be refunded. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:Photo Color Material:non-woven fabric Package Contents: 2x Air Filters Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.