|Engine make||Detroit Diesel|
|Power hp||390 horsepower (290 kW)|
|No. of Cylinders||6|
The McConnell-Marc 990 tractor was built by McConnell Tractors after they bought the 4WD line from Massey Ferguson. They were discontinued after selling the line to AGCO, who then created the Agcostar line. It features a 390 horsepower (290 kW) Detroit Diesel engine.
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