The NOS Eberspacher Cat Back Exhaust Muffler is a high-quality performance part designed specifically for BMW E30 325e models from 84-87. Made from durable alloy steel with a black painted finish, this muffler is a genuine OE/OEM part with the manufacturer part number 18121172047. It features a clamp-on mounting style for easy installation on the exhaust system of the vehicle. This muffler is a reliable and authentic product manufactured in Germany, ensuring optimal performance and a perfect fit for your BMW E30 325e.