Nissan switched from a timing belt to timing chains on the V6 VQ35DE motor between the 2004 and 2005 model years
Has a timing chain.
2004 Nissan Maxima has a timing chain.
chain
timing CHAIN
The 3.5 litre V6 engine in a 2004 Nissan Quest has a timing CHAIN
It has a cam chain.
chain
Timing chains are designed to last the life of the engine. Unless it becomes noisy it does not need replacing until the engine is rebuilt.
It has a chain that requires no maintenance.
timing CHAIN
Timing belt
2004 Nissan sentra with a 1.8L engine has a timing chain and you do not replace it.