Isuzu 4HE1 Engine
142 - 175 HP
The ISUZU 4HE1 4.8L was rated at a peak 175 horsepower in automatic transmission applications and 142 horsepower in applications with a manual transmission. The inline 4 cylinder 4HE1 features a robust cast iron engine block with dry cylinder liners, cast iron cylinder head, and gear driven overhead camshaft.
It is notable for its nearly 5 inch stroke and undersquare bore-to-stroke ratio, which provide considerable torque at low engine speeds. Isuzu introduced the 4HE1 turbodiesel to their NPQ and NPR cab-over truck models in 1999