You can purchase new seat belts for a 2003 Toyota Corolla from the Toyota Parts Zone website. Alternatively, you can also purchase these seat belts from websites such as eBay.
My 2000 Corolla definitely has a timing CHAIN. I don't recall what year, but it has been awhile since they have used belts.
When changing belts, it is important to know the layout and have a diagram to help guide the removal and replacement of these belts. A diagram for these belts can be found in the maintenance manual of a 1989 Toyota Corolla 4-A-F.
For a used Toyota Corolla to be considered certified, many things are checked first. These things include the engine, transmission, brakes, tires, timing belts, and much more.
The 2008 Toyota Corolla has 16 valves.
The 2012 Toyota Corolla has 16 valves.
The 2001 Toyota Corolla has 16 valves.
The 2013 Toyota Corolla has 16 valves.
The 2004 Toyota Corolla has 16 valves.
The 2014 Toyota Corolla has 16 valves.
The 2005 Toyota Corolla has 16 valves.
The 2002 Toyota Corolla has 16 valves.