The product is a OEM resonator exhaust muffler specifically designed for BMW 645, 650, 550 models from 2004 to 2010. Made of steel and manufactured in Germany, this genuine BMW part features a factory original design and is easy to replace. The resonator muffler comes in a quantity of 2, with labeling and certification that ensures its authenticity as an OEM part. Ideal for those looking to upgrade their exhaust system with high-quality components that meet the standards of BMW's original equipment.