The Contitech CT939 timing belt is used in several car models, primarily from Volkswagen (VW), Audi, and Volvo. Here are some of the specific models:
Volkswagen (VW)
Transporter Mk IV Box 2.5 TDI (1990 - 2003)
Transporter Caravelle Mk IV Bus 2.5 TDI (1990 - 2003)
Audi
Audi 100 C3 Saloon
Audi A6 C4
Volvo
Volvo V70 Estate 2.5 TDI (1996 - 2000)
Volvo 850 Estate