How many liters does a cummins have in a peterbilt?

The engine displacement of a Cummins engine in a Peterbilt truck can vary depending on the specific model. Common Cummins engines found in Peterbilt trucks, such as the ISX or X15, typically range from about 8.9 to 15.0 liters. For example, the ISX15 engine has a displacement of 15 liters. Always check the specific engine model for precise specifications.