Peterson is committed to maintaining an extensive parts inventory that puts the parts you need within your reach when you need them. We also offer 24/7 access to, where you can select from the entire line of Caterpillar parts and supplies. Parts drop locations throughout California, Oregon, and Washington allows us to get your orders to you fast, making us one of the most accessible Cat dealers in the country.

The Cat Central app is now available!

With Cat Central you can scan a QR code to gain instant access to asset-specific information, parts and maintenance resources including:

  • Search for and order parts
  • Dealer availability and pricing
  • Maintenance manuals and instructions
  • Warranty registration
  • Cat Reward Programs

For Android

For Apple


  • POWER GENERATION EQUIPMENT | Downtime can lead to significant losses in production. When the power goes out, you can rely on Peterson to get the parts you need to get the lights back on. We stock parts for Cat and Olympian diesel and natural gas generator sets, switchgear, transfer switches and UPS equipment.
  • MARINE ENGINES AND GENERATORS | Whether you're boating for business or pleasure, you don't want to be dead in the water. For Cat marine engine and marine generator parts, Peterson offers parts for workboats and pleasure craft powered by Cat engines.
  • COMMERCIAL ENGINES | For years, people have trusted Cat industrial engines to power their equipment. If you're running anything from a fire pump to a deck winch, we'll get you the parts you need to keep your operation going.
  • CAT ON-HIGHWAY TRUCK ENGINES | Peterson Power Systems is committed to serving owners of commercial vehicles powered by Cat engines. If you need parts for your truck, call us today.
  • ALL MAKES, ALL MODELS | Not running Cat Power Equipment? No problem! Cummins, Detroit, Deere, Waukesha, or any other major brand: let us know what you need, and we'll do whatever we can to get your part to you as quickly as possible.