Changing the DCT transmission cooler, requires the removal of the wheel and inner fender liner.
Here is the stock DCT cooler.
The MachtSchnell sensor boss bolts right onto the oil line fitting block using longer bolts. This makes fitting temperature sensors a much easier deal.
The M3 has great ductwork feeding the air intake and DCT cooler though scoops in the front bumper cover. One of the front ducts is shown here. These are well made parts and being able to reuse the DCT duct really helps the cooler’s efficiency.
The CSF cooler drops right in. CSF supplies most of the mounting grommets with new parts with different offsets to accommodate the thicker core but you have to reuse the two inner grommets.
The CSF part is a nice, clean and easy bolt in.