The brand-new Sienna rear muffler assembly combo kit. This great Sienna replacement muffler assembly is designed for the 2004–2016 model with a 3.5L engine FWD. This rear muffler comes with gaskets and h/w. Our replacement Sienna mufflers are all brand new construction. So there are no expensive core charges or hassles. Originally, the muffler came with a tail pipe. To install this muffler, it has to be cut at the appropriate location. It can be installed with the muffler clamp or welded to the tail pipe joint.
