its inside the alumium housing, follow the top rad house to it. but if your overheating check water pump first.
its ur talking about an e30 BMW , then just follow the upper radiator hose back tot he engine and remove the housing where the hose goes to and thermostat is there.
what kind of transmission fluid does a 1991 bmw 525i need
The thermostat on a BMW 525I is located into the water pomp in the thermostat housing.
is in hard to replace a thermostat on a 2001 bmw 325i
How do you change a fan clutch on a 1991 bmw528i?
Were is the thermonstat on a 1992 bmw 318 i
Go to the dealership or a BMW specialist.
thermostat
Its in the lower radiator hose housing that mounts to the block on side on engine
In the M20 engine it's located on the thermostat houseing, on the M50 it's on the the front of the head intake side.
The thermostat on a 1987 BMW 325i can be found by following the upper radiator hose. The thermostat will be located on the side of the engine.
The Z3 97 has a thermo housing, its right in front of he fan and if you change it you need to drain the anti-freeze and when you r done replace it with BMW Antifreeze, add 50 water...cost 20.00.. ..thermostat 35.00 total 55.00