Cummins ISB 5.9 Diesel

200–360 HP, Proven 5.9 L Power

Power: 200 – 360 HP | Torque: 520 – 800 lb-ft

Displacement: 5.9 L (359 cu in) inline-6 | Production Years: 1998 – 2007

The Cummins ISB 5.9 is the benchmark medium-duty diesel trusted in delivery trucks, buses, construction rigs, and high-performance pickups. This water-cooled, turbocharged 4-stroke engine features:

• Rugged Cast-Iron Architecture – 102 mm (4.02") bore, 120 mm (4.72") stroke, and 17.2:1 compression for unbeatable durability.
• Efficient OHV Design – Single camshaft with four valves per cylinder maximizes airflow and fuel economy.
• Wide Power Band – Factory calibrations from 200 HP for vocational duty up to 360 HP for heavy haul and performance builds.

ISB 5.9 Engines & Parts In Stock

At Boots & Hanks Truck Parts, you’ll find:

• Complete, dyno-tested Cummins ISB 5.9 takeouts
• Reman long blocks & cylinder heads
• Turbos, injectors, ECMs, gasket kits, and hard-to-find internals

Every unit is compression-tested, warrantied, and ready for same-day worldwide shipping. Keep your fleet running with genuine Cummins reliability.

Call 800-738-7802 or browse live inventory at BootsAndHanksTruckParts.com today.