Cummins ISB Engine Part

Good used idler pulley from a Cummins ISB engine. The idler pulley has been visually inspected and is in good condition. The idler pulley has rust, please refer to photos. The pulley spins freely. All bolt holes are clean and clear from obstructions. The casting number is 3964820. The serial number is not available. Please see the photos attached. If you have any further questions, please feel free to call or email us. We ship anywhere! Thank you!, Serial#: N/A, Core Charge: 0.0, Casting#: 3964820