The Isuzu 6HE1 is a 6-cylinder inline diesel engine with a displacement of either 7.1 liters (7127 cc) or, in some variants, 8.2 liters (8226 cc). It is a liquid-cooled engine, typically featuring direct injection and a SOHC valvetrain (12-valve or 24-valve depending on the variant). Power output ranges from approximately 165 to 260 hp (123–194 kW) and torque from 330 to 560 lb-ft (46–77 kg⋅m), varying by model and whether it’s naturally aspirated or turbocharged.