My friend Sean's M3 also needed a little love when it comes to the cooling system. Sean wants to pick the car up and take it home. Our plan was to replace the radiator with a Mishimoto Z3M three core unit and a Spal 16" fan. However we ran into a few quirks. We also replaced the thermostat and thermostat housing. We upgraded the water pump to a Stewart high flow unit to improve performance. We also used some new billet radiator stays and a European radiator cover. To cap things off we threw in a Radium Engineering billet expansion tank.
![20200201032238-7aca8180](https://dmitrysgarage.com/wp-content/uploads/freshizer/e76d3488310c814421e62e4fd280bbae_20200201032238-7aca8180-scaled-768-432-c-90.jpg)