Produced from 1994-1998.5, the 5.9 Cummins 12v is known for its unbeatable reliability. Learn about common 12v problems such as the killer dowel pin. Additionally, we have a number of articles on performance modifications, such as cold air intake upgrade guides.
5.9 12v Cummins Killer Dowel Pin Problems The 5.9L Cummins 12-valve diesel engines, manufactured between 1988 and 1998, feature a steel dowel pin that locates the front timing gearcase. Over time, this steel dowel pin can wobble out due to the constant heat cycles and vibrations of the engine. If (or when) the dowel pin works its…
Cummins 12v 5.9L 6BT The Cummins Diesel 5.9 liter Engine 6BT, aka the Cummins “12-valve” was the first member of the “B” engine family to be used in a light truck vehicle. The 6BT used Robert Bosch GmbH fuel systems, injector, and VE rotary pump and P7100 inline injection pumps. Some early 6BT’s were supplied…
