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The Chrysler Pacifica comes equipped with a 3.6 L V6 engine that features a timing chain rather than a timing belt. A key advantage of having a timing chain is its longevity, as it typically does not require replacement. However, in rare cases, the timing chain may need to be replaced if it becomes loose or excessively worn. Unlike timing belts that are exposed to external elements since they are located outside the engine, timing chains are enclosed within the engine and are less susceptible to wear and tear. Timing belts usually need to be replaced every 60,000 to 100,000 miles, but the specific mileage for replacing a timing chain remains uncertain.
The 2017 Chrysler Pacifica is equipped with a grand total of four timing chains.