PACCAR Inc is a multinational truck manufacturer that designs, manufactures, and distributes light-, medium-, and heavy-duty commercial trucks under the Kenworth, Peterbilt, and DAF brand names through facilities worldwide, generating the majority of revenues from truck sales with meaningful contributions from aftermarket parts distribution and captive financial services. The company sells trucks to dealers who order them to customer specifications, manufactures its own diesel engines for a portion of its vehicles, and sources remaining components from major suppliers, with raw materials and purchased components representing approximately 85% of truck production costs. PACCAR's earnings depend on truck volumes, market share, pricing margins, parts sales tied to its installed customer base, and financial services revenue from retail loans, leases, dealer financing, and used truck sales, all driven by economic cycles, freight demand, interest rates, and credit conditions.