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Pentastar V6

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Jeep’s new 3.6L Pentastar V-6 isn’t a Hemi-killer, but it’s got a whopping 40 percent more horsepower than the outdated 3.8L that used to come in JKs. Considering the excellence of the rest of the JK platform, a better engine was the missing link in the perfection chain. It’s arrived.