These are 3 into 1 type headers with a set for the front 3 cylinders and a set for the rear 3, both with 1.5" primaries. The primary tubes are short (about 16") which makes installation easier. They come with 2" diameter down pipes to connect to the stock exhaust system. These are a budget-friendly alternative to other systems on the market.
Note: Some simple fabrication is required to make the connection to the existing exhaust: The stock downpipes need to be cut just-ahead of the catalytic converter, and the header's downpipes slip fit over their O.D. (unlike systems which slip fit to the I.D.) We recommend installing these using the heat shield gasket listed in this catalog section.
Picture shows the headers with the ceramic coating.
These will fit the 325e - the "e" exhaust merges into one pipe in front of the cat, so you'll need to install a "Y" in front of the cat to adapt the two down pipes to the cat.
Note: These do NOT fit right hand drive cars.(Australia, UK, Etc.). These do not fit with cars equipped with Automatic Transmissions, nor do they fit the iX.