: Buys from individuals and dismantlers. They require a spreadsheet of part numbers before shipping to provide a quote.

These companies specialize in buying back used components for refurbishment:

: Specialized diesel core buyer for heavy-duty, industrial, and agricultural applications, covering brands like Bosch, CAT, Cummins, and Delphi.

: Actively buys injectors, turbos, and high-pressure fuel pumps for brands like Ford, GM, Mack, and Volvo.