The fan clutch nut is reverse threaded. And I use a long screw driver to wedge the one of the 4 bolts on the water pump pulley to keep it from moving. Once the fan clutch and pulley are off, there are 4 bolts holding on the thermostat housing.
Inspect the housing for any signs of cracks before reinstalling it.
1997 Madeira Violet 328is - Carbonio Intake, Racing Dynamics exhaust, fan delete, ASC delete, M50 intake manifold, M3 Cams, Eurospeed/AA software, 3.38LSD, M3 f&r brakes + MC, Bilstein PSS, Eibach swaybars, BBS RK 17x8" wheels, Toyo T1R (235/40R17) tires, Racing Dynamics K55 kit, full euro lighting, 4300k HID lows, etc..........
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