No, the 3.8L v6 has a timing chain
Chain
Chain
The 4.0L Jeep does not have a timing belt, it has a timing chain.
A 2004 Wrangler has an inline six, not a V6. It has a timing chain.
That engine uses a timing chain which never needs serviced under normal conditions.
timing CHAIN
Chain
The V6 has a timing CHAIN
ChainChain
Chain.
Chain
Timing chain.