New, Genuine Volvo Excavator Parts . To keep Volvo’s reliability, our inventory of OEM Volvo Parts is offered at the lowest possible prices. It is our mission at Parts Supply Inc., to give you access to our online catalog at discounted prices. Our stock includes OEM Engine Parts from injectors to complete Engine Rebuild Kit. ECU and VCU to keep your machine up and running. We carry components and parts including Main Pump, Final Drives, Main Control Valve and Hydraulic Cylinders. Complete inventory of undercarriage parts ready to ship.