Twist counter-clockwise to remove vehicle's expansion tank cap.

Twist counter-clockwise with a [larger] flathead screwdriver.

Allow vehicle's cooling system to drain until no more coolant flows out.

Remove the front and back air intake snorkels by removing the 2 T-15 screws (white arrows).

Depress the 2 side clips holding the fan shroud electrical connector into place.

Remove the 2 10MM bolts securing the air intake box into place.

Remove MAF connector by using a flathead to lift up the retention clip. Then, remove the silver band clamp using a flathead.

After loosening the silver band clamp, wiggle the air intake box out of place and put it off to the side.

Remove coolant recirculation hose band clamp using a flathead screwdriver.

Unseat the vehicle's transmission/oil cooler from the fan assembly by removing the T-20 retention screw.

Carefully remove the vehicle's radiator by pulling up, while clearing all electrical and coolant lines out of the way.

Release the upper radiator hose by fully pulling up on all 3 retention clips shown.

After all retention clips are loosened, pull carefully but forcefully to detach and remove the upper radiator hose.

Remove lower radiator hose by releasing the retention clip, then pull until hose is released from the radiator.

Remove secondary lower radiator hose by releasing the retention clip, then pull until hose is released from the radiator. (hook pick tool recommended)

Remove the oil cooler hose attached to the lower radiator, by removing the T-20/25 screw and backing the hose off.

Remove the 2 T-20/25 screws that are mounting the radiator into place.

Remove the radiator by carefully pulling up, while clearing all electrical and coolant lines out of the way.

Transfer all applicable hardware to the new radiator (unless not needed). i.e. clips, hoses, screws, etc.

Install new radiator in the exact reversal of the removal. (After removing any coolant hose, replacement is recommended and o-ring replacement is required.)

Fill your cooling system with approved BMW coolant until full, then carry out cooling system bleed procedure.

Good job replacing your radiator! Be sure to keep an eye out for coolant leaks or any signs of overheating.