Hack Engineering’s upgraded Aluminium Thermostat Housing for BMW M50 and M52 engines. This replaces the OE plastic piece which is prone to cracking.

Comes with gaskets and replaces BMW part number 11531722531 (E36/E34/Z3) or 11531740478 (E39/E38). Please select your chassis from the dropdown.

Take a look at our Thermostat and Housing Upgrade Kit here.

Why not grab a water pump while you’ve got things apart.