Yes, it is required.
yes
chain.
yes
All 2005 Honda Civic use a timing belt that must be replaced every 110,000 miles. Warning: This is an interference engine.
All Honda 4 cylinders from 2003 and up have a timing chain except the 2004 & 2005 Honda Civic which has a belt. 2006 and up Civic has a chain.
The 2005 Honda Civic has a timing belt that must be changed every 105,000 miles or 10 years whichever comes first. Warning: This is an interference engine.
The 2005 Honda Civic 1.7 L engine uses a cam belt that must be replaced every 110,000 miles. Warning: This is an interference engine.
According to Honda's website the standard Civic models did not start using a timing chain until 2006 with the exception of the SI models which were a different engine and have always had a timing chain. But PRIOR to 2006 all the other civic models had timing belts (which have to be replaced to be replaced periodically).
The 2005 Honda Civic has 16 valves.
The 2005 Honda Civic has an inline 4 engine.
The 2005 Honda Civic has a 5-speed manual.
The 2005 Honda Civic is a gas-powered vehicle.