Specifications Comparison: 2004 Jeep Wrangler vs 2021 Jeep Wrangler

Timing Belt Or Chain

Engine	Belt Or Chain	Interference or Non-Interference	Replacement interval (miles)
2.4L	Timing Belt	Non-Interference	90k
4.0L	Timing Chain	Interference	Lifetime

Engine	Belt Or Chain	Interference or Non-Interference	Replacement interval (miles)
2.0L Hybrid	Timing Chain	Interference	Lifetime
2.0L Turbocharged	Timing Chain	Interference	Lifetime
3.0L Diesel	Timing Chain	Interference	Lifetime
3.6L	Timing Chain	Interference	Lifetime
6.4L	Timing Chain	Interference	Lifetime