Look in Toyota Nation Camry forum. I believe this has been asked and answered. There are some very savvy members in that forum.
I had two changed on my 2000 Avalon, and I paid about $350, parts and labor.
2002 and up four cylinders have a timing chain no belt.
toyota recommends that timing belts be replaced at 60,000; however, 100,000 miles is fine. Replace at 100,000 miles as preventative maintenance. 4 cylinder 2002 Camry has a timing chain which does not have to be replaced.
The 2.4 liter four cylinder engine in a 2002 and 2003 Toyota Camry have a timing CHAIN
4 cylinder Camry's mainly come with timing belts which should be changed around 100,000 miles, v6 Camry should have a timing chain
Chain
It has a timing belt.
2003 Toyota Camry 2.4L does NOT have a timing belt. It does have a Timing chain which DOES NOT need to be replaced.
It depends on the engine. I have a 2002 Camry XLE with a 4cyl which has VVTi and it has a chain.
Here's a great video that shows you how to replace the headlight on a 2002 Toyota Camry: carcarekiosk.com/video/2002_Toyota_Camry_LE_2.4L_4_Cyl./lights/headlight
1-2 hours for labor + parts + alignment (not always needed but recommended after such repair).
It has a timing belt that must be replaced every 90,000 miles.