No, the 3.8L v6 has a timing chain
Chain
Chain
That engine uses a timing chain which never needs serviced under normal conditions.
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.
Chain
timing CHAIN
The V6 has a timing CHAIN
Chain.
Chain
ChainChain
Timing chain.