Your 2001 Honda Civic has a timing belt. Your engine is an interference engine and as such if the cam belt breaks serious engine damage will occur. Replace the belt at 110,000 miles and also replace the water pump which is driven by the belt.
Costs of timing belt repairs on a 2004 Honda Civic depends on the location of the vehicle. Time to replace to belt is rated at 3 to 5 hours, and costs of labor varies on average between $50 to $100. The final price with parts included would range between $350 to $600.
Beginning in 2003 all Honda 4 cylinders switched to a cam chain except the Honda Civic 1.7 liter 4 cylinder which still had a belt. The Honda Civic 1.7 liter switched to a cam chain beginning in 2006. All Honda V6 engines still use a cam belt that must be replaced.
It has a timing belt and it MUST be changed every 105,000 miles. This is an interference engine and as such if the belt breaks there will be serious engine damage. Also replace the water pump when you replace the belt as it is driven by the cam belt.