Actually, the heaters for motors with model code FUJA, FUJB in Fiesta can work properly for a long time. During winter using of Ford Fiesta heat exchanger is in operation. Effective climate regulation for 1.2 vehicles produced in 2001 is possible. For change of it you need 247 mm high, 28 mm deep and 207 mm wide radiator. This is factory size of heating module for 2002 Ford Fiesta with DHA, DHB, DHC, DHD, DHE, DHF, DHG engine.
The visual problem in 1.2 Fiesta with heating radiator problems is cooling fluid coming out. While repairing Ford Fiesta 1.3 purchase radiator with 190 mm X 156 mm X 42 mm (height, width, depth). It also may be seen in Ford as bad heating, especially in 2002 year of production.