Amazon.com: New Carriage Belt for HP DesignJet 500 510 800 815 820 42 inch C7770-60014 Plotter with Pulley : Office Products
HP Designjet printer complete list by model number, with suggestions on a reliable ink company for after-market ink, especially for HP Designjet 5000 and 5500, but also others.
High-Quality and Reliable Hp Designjet 500 Parts - Alibaba.com