The fact that you asked shows you have no business tackling this repair. If it is done incorrectly serious engine damage will occur when you attempt the start the engine. Take it to a professional for this repair.
Every 90k miles just like a timing belt. You can go over but it will stretch and jump teethes screwing up your timing.
03 camry 4 cylider has a timing chain a 03 v6 camry hmilesas a belt and you change it every 90,000
There is no timing belt. It has a timing chain that should last 150K at the least. Chevy says its not wearable.
2004 Toyota Sequoia has a timing CHAIN, not belt, so I would assume that an '03 also has a chain.
They made Google for a reason.
I think it's 60K.
Every 60,000 miles
The 2.4 engine has a timing chain. The 3.0 engine has a timing belt. The recommended intervals for changing the belt could be anywhere between 60K (harsh conditions) to 105K (normal conditions).
About 30000 miles, or when you start seeing small hair line cracks on the inside of the belt
Timing CHAIN
It must have a timing chain . The Gates website does not list a timing belt for the 2003 Infiniti G35
it has a timing chain