This aluminum thermostat housing is the ideal replacement for your original plastic unit. The factory produced these parts in plastic, which is good for only a few years. The plastic becomes brittle due to age and continuous heat, leading to cracks and leaks. Don't risk getting stuck because of cheap plastic! Exchange the factory piece with this quality aluminum replacement and get rid of the potential headache down the road.
Profile gasket included but thermostat and o-ring sold separately.
Fitment note: for 1997-1998 528i with M52 engine only.
E39 (97-03) > 528i 97-98