Project E46 M3: Part 16 – Koyorad radiator installation


Once the oil cooler is released, you can leave it hanging, or we would recommend zip ties to hold it onto the anti-roll bar. As mentioned earlier, you don't have to remove the screws holding the two plastic bars there (alright, so I accidentally did–do as I say, not as I do). If you’ve got a soft bristle brush and an air compressor, it would also be a good idea to brush some of the debris off and blow it out with air.
After a couple of minutes of brushing and blowing, our oil cooler looks much better. Having lots of debris trapped in there won’t allow the desired amount of air to go through the heat exchanger and cool the oil, so it’s good to do this every once in a while. Since this article is not destined for, we can say that “we really blew the crap out of it”.
In the Midwest, it’s always nice to have the view of the Fall season outside. That looks somewhat apocalyptic.

Let’s continue with the fan shroud. You’ll find a few Torx screws in each corner that you’ll have to remove, along with a fifth one that sits underneath the driver-side coolant hose, which is a little harder to get to with a Torx socket. Luckily, Koyorad replaces the latter with a 10-mm screw that will be much easier to secure later.

I’ve always been leery when approaching factory hose clamps, because I hate them. But I feel BMW did something right this time. To undo the clamps holding the coolant hoses on, you simply flip these up with a screwdriver.

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