What engine was standard in the 1993 Jeep Grand Cherokee ZJ?

The 1993 Jeep Grand Cherokee ZJ came standard with a 4.0L straight-six engine.

When the ZJ Grand Cherokee launched as an early 1993 model, every version initially used an AMC-derived 4.0-liter inline-six. The engine produced about 190 horsepower and gave Jeep a strong combination of durability, low-end torque, and relatively straightforward maintenance.

A 5.2-liter Magnum V8 became available during the 1993 model year, making the Grand Cherokee one of the few SUVs in its class to offer V8 power. That engine was optional, not the standard powerplant. The 2.5-liter diesel was also an export-market engine and was not the normal North American choice.

The 4.0L is often called an inline-six, I6, or straight-six; those names describe the same cylinder arrangement. The ZJ was introduced in 1992 for the 1993 model year, so references to a “1992 ZJ” generally concern production or launch timing rather than a separate standard engine.