Complete a full aftermarket double din headunit installation in your Mazda 3 BK (2004-2009) from start to finish with this Aerpro vehicle specific headunit installation kit, containing everything you need for a perfect upgrade in one box. This kit includes: Facia kit, plastic brackets, screws, steering wheel control interface and universal patch lead. To make the installation process even easier, simply add Aerpro APP8 or APP9 aftermarket headunit harness adapters which will connect from the aftermarket headunit directly into the steering wheel control interface harness supplied in this kit.