The Vehicle Identification Number - VIN derivative (1) for 3500 LZ4 is stamped or laser etched on the front and left side of the engine block. The Vehicle Identification Number - VIN derivative is nine digits long and can be used to determine if a vehicle contains the original engine.
| • | The first digit identifies the division. | 
| • | The second digit identifies the model year. | 
| • | The third digit identifies the assembly plant. | 
| • | The fourth through ninth digits are the last six digits of the Vehicle Identification Number - VIN. |