The Caterpillar D8K is a legacy powerhouse, and its price is heavily dictated by the condition of its D342 Turbocharged engine (300 HP) and the undercarriage life remaining. Buyers should verify the serial number prefix (typically 77V or 76V) to ensure parts compatibility. A fair price must account for the hour meter reading, though on older machines, the wear percentage of track links, rollers, and idlers is a more accurate value indicator. Ensure the Power Shift transmission operates smoothly across all gears without slippage.