The brand-new Jetta rear muffler assembly combo kit. This great Jetta OE replacement muffler assembly is designed for the 2014–2018 model 1.8L engine 4-door sedan only. The rear muffler comes with a sleeve clamp. Our replacement Jetta mufflers are all brand new. There are no costly core charges or complications. Originally, the entire catback came as a single piece. To install this muffler, it has to be cut in the correct location. It can be mounted using a sleeve clamp or welded to the mid-pipe joint.