The John Deere 9420 tractor has 425 hp engine horsepower and 343.4 hp PTO horsepower.
Engine horsepower425 hp
PTO horsepower343.4 hp
Drawbar horsepower400 hp
Rated RPM2,100 rpm
Torque1,450 lb-ft
Operating weight37,246 lb
John Deere 9420 Horsepower Details
Engine horsepower
425 hp
PTO horsepower
343.4 hp
Drawbar horsepower
400 hp
Rated engine RPM
2,100 rpm
Engine torque
1,450 lb-ft
Engine displacement
12.5 L
Engine cylinders
6 cylinders
Engine model
a 12.5L turbocharged
Operating weight
37,246 lb
Horsepower Comparison Chart
Engine horsepower comparison
This model
425 hp
Average
64.9 hp
Low
6 hp
High
540 hp
PTO horsepower comparison
This model
343.4 hp
Average
57.8 hp
Low
6 hp
High
620 hp
Drawbar horsepower comparison
This model
400 hp
Average
57 hp
Low
5.5 hp
High
470 hp
Operating weight comparison
This model
37,246 lb
Average
5,791.3 lb
Low
300 lb
High
59,000 lb
John Deere 9420 Extra Horsepower Notes
Horsepower note
The John Deere 9420 shows 425 hp at the engine and 343.4 hp at the PTO, which is a normal drop from engine power to PTO power for a high-horsepower tractor.
PTO note
With 343.4 hp at the PTO, the John Deere 9420 is best matched to large PTO-driven equipment where the implement horsepower requirement matters more than the engine rating; large implements still need to be matched by PTO requirement, ballast, traction and transmission setup.
Drawbar note
For plows, ground tools and pull-type loads, the John Deere 9420’s 400 hp drawbar horsepower says more than engine horsepower alone.
Power-to-weight note
At 37,246 lb and 425 hp, the John Deere 9420 works out to about 87.6 lb per engine horsepower, making it light for its power, so traction and ballast can become the limiting factor before engine power.
Engine note
The John Deere 9420’s engine setup is engine model a 12.5L turbocharged, 12.5 L displacement, 6 cylinders, rated at 2,100 rpm, matching its high-horsepower horsepower range.
Torque / RPM note
The John Deere 9420’s 1,450 lb-ft torque rating works with its 2,100 rpm rated speed, so load response depends on both numbers.
Official information note
Mistakes do happen. Horsepower, PTO horsepower, drawbar horsepower, weight and engine specs can change by year, market, engine option, cab, transmission and test standard. Please check the operator manual and official deere.com website for official information.
