The
Caterpillar 3126 is a
turbocharged 7.2L inline 6-cylinder
diesel engine manufactured by
Caterpillar and first introduced in 1997; it was the first electronic mid-range diesel engine that Caterpillar produced.
[1] It is the successor to the
Caterpillar 3116 engine and was replaced by the
Caterpillar C7 engine in 2003.
[1] It is a medium-duty engine and has been used in dump trucks, long haul trucks, ambulances, buses,
RVs, boats, cranes, fire trucks, and more.
[2] In 1998, Caterpillar released an improved version, the 3126B; in 2002, the 3126E was released; though these improved versions only affected engine electronics, not the actual engine design.
[1] Caterpillar launched a three-tier system of overhaul kits for the 3126 and its C7 successor in 2011.
[3]
It was rated for multiple power applications from 170HP to 330HP