EPA Tier 4. Bore/Stroke:4.17x5.00 inches (106x127 mm) Aspiration: Turbocharged and air-to-air aftercooler. Engine features: Reluctor ring, Aux drive, Four bolt rotary injection pump (HPCR), Push rod driven transfer pump and upward mid mounted turbo. ECM is mounted and included with engine. Engine only turns half way both ways then locks up. There is no noticeable damage to block or head. Selling as a rebuildable core "as is". Overhaul kits available.