In case the original one has become a little too noisy: housing to use a standard 40 x 40 x 10 mm brushless 12V PC cooling fan* to suck cabine air to the temperature sensor of the Porsche 944 which is located behind the glove-box. The material is Nylon (white, black, or filled with aluminium particles).
*) E.g. Noiseblocker BlackSilentFan XM1 4 cm PC-ventilator http://www.business.conrad.nl/goto.php?artikel=872056
5.852 w x
3.786 d x
2.304 w x
1.491 d x