However, the most common engines were the 4.0L inline-6 and the 2.5L inline-4. While the exact specification might vary slightly depending on the specific model year and even manufacturing date, these are generally accepted ranges:
* 4.0L Inline-6: 0.035" to 0.045" (inches)
* 2.5L Inline-4: 0.035" to 0.040" (inches)
It is crucial to consult your owner's manual for the precise specification for your Jeep's engine. Using the wrong gap can lead to misfires, poor performance, and engine damage.