The New Holland T9.390 tractor engine horsepower is 354 hp | 264.0 kW, and PTO horsepower is 341.13 hp | 254.4 kW.
Engine HP354 hp | 264.0 kW
PTO HP341.13 hp | 254.4 kW
PTO Transfer96.4%
Displacement543 ci | 8.9 L
New Holland T9.390 Horsepower Specs
Engine horsepower
354 hp | 264.0 kW
PTO horsepower tested
341.13 hp | 254.4 kW
New Holland T9.390 Useful Horsepower Calculations
PTO-to-engine power transfer
96.4% of engine hp reaches the PTO
Engine size per PTO horsepower
1.6 ci per PTO hp
PTO horsepower per liter
38.3 PTO hp per L
Engine size per engine horsepower
1.5 ci per engine hp
Engine horsepower per liter
39.8 engine hp per L
Rated speed per PTO horsepower
5.9 rpm per PTO hp
New Holland T9.390 Engine Specs
Engine type
turbocharged aftercooled diesel
Displacement
543 ci | 8.9 L
Bore and stroke
4.49×5.69 inches | 114 x 145 mm
Emissions
Interim Tier 4
Rated RPM
2000
New Holland T9.390 Fuel, Cooling, Starting & Service Specs
Starter volts
24
Battery volts
12
New Holland T9.390 Horsepower Comparison Charts
Engine horsepower comparison
This model
354 hp
Average
210 hp
Low
120 hp
High
380 hp
PTO horsepower comparison
This model
341.1 hp
Average
175 hp
Low
100 hp
High
320 hp
Displacement comparison
This model
543 ci
Average
520 ci
Low
360 ci
High
750 ci
Rated RPM comparison
This model
2,000 rpm
Average
2,100 rpm
Low
1,600 rpm
High
2,500 rpm
Engine size per PTO HP
This model
1.6 ci/hp
Average
3.3 ci/hp
Low
2 ci/hp
High
5.2 ci/hp
Benchmarks use practical low, average and high ranges for the large ag tractor category. Use the operator manual and actual engine/tractor configuration before sizing implements or judging working power.
New Holland T9.390 Horsepower FAQ
How much horsepower does the New Holland T9.390 have?
The listed engine output is 354 hp, above the 210 hp benchmark average. That is a higher-power result, so ballast, tire setup and implement width matter if you want to use the full 354 hp.
How much PTO horsepower does the New Holland T9.390 have?
The listed PTO output is 341.1 hp, above the 175 hp benchmark average. That is the number to use for mowers, balers, augers, pumps and other PTO tools that need up to about 341.1 hp.
How much engine power reaches the PTO on the New Holland T9.390?
The PTO-to-engine transfer works out to 96.4%, from 354 engine hp to 341.1 PTO hp. That is a strong transfer figure when the two specs are from the same configuration.
How big is the New Holland T9.390 engine?
The engine displacement is 543 ci, close to the 520 ci benchmark average. It is close to the normal engine-size range for this horsepower class.
Is the New Holland T9.390 engine stressed for its PTO horsepower?
The engine has about 1.6 cubic inches per PTO hp, using 543 ci and 341.1 PTO hp. That is a smaller-displacement, higher-output style result.
How much PTO horsepower per liter does the New Holland T9.390 make?
The output density is about 38.3 PTO hp per liter, using 341.1 PTO hp and 8.9 L of displacement. Higher hp/L means more output squeezed from each liter; lower hp/L usually means a more relaxed engine tune.
What rpm is the New Holland T9.390 rated at?
The rated speed is 2,000 rpm, close to the 2,100 rpm benchmark average. The 2,000 rpm figure is around normal for this class.
Official information note
Horsepower and engine specs can vary by year, market, engine option, fuel system, test standard and tractor configuration. Check the operator manual, spec plate, parts book and official newholland.com website before buying parts, sizing implements or making repair decisions.
