The Escort was THE car of the 1980s, as much as people who grew up during that decade may hate to admit it. In its second year, it was the best selling car in the United States.
There were a total of 3 generations of this car. They ran from 1981 - 1990, 1991 - 1996, and 1997 - 2002. Besides the sedan, hatchback, and wagon models, there was also a performance model called the ZX2. They featured the Zetec DOHC I4 engine, and they actually stuck around even after the Escort name was dropped.
A ZX2 S/R model was also made in the late 90's. The S/R stood for Street Racer, and it was designed for the custom racing car scene, although it never became as popular as the Honda Civics and Toyota Celicas in those groups.
If you're looking to buy a Ford Escort, or parts for your Ford Escort, you can find just about anything you need on eBay. There are so many of these cars out there, you should have no problem finding the part you need, whether it's original or aftermarket.