The Cummins 6BT Engine or more commonly known as the Cummins 5.9 Engine is one of the most popular light to medium duty truck engines ever made. The engine was first manufactured in 1988 and was launched with the 1989 Dodge Ram. Chrysler introduced the Ram in 1981 but faced stiff competition from GM and Ford. Their original Chrysler LA and later Magnum engines weren’t cutting it. They needed a heavy duty engine that could compete.
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