The Jeep 4.0-liter inline-six, also known as the AMC 242, may not have been the most powerful engine of its era – especially compared to Toyota’s 4.0-liter V6, which produced around 245 horsepower – ...
Known for its use in Jeep SUVs, the 4.0 was available from 1987 to 2006, eventually being phased out for the Chrysler ...
This engine was believed to have come from a 1998 Jeep Grand Cherokee, where it was rated at about 195 horsepower. The Jeep 4.0 inline-six is known for durability but failed here due to neglect.