Shop new, used, and remanufactured Caterpillar C12 Fuel System on MyLittleSalesman.com . Compare active listings with prices from $50 to $700. Sellers include LKQ Heavy Truck, American Truck Sales & Salvage, Rydemore Heavy Duty Truck Parts, and more. Filter by condition, price, or year to find the Caterpillar C12 that fits your job.