The New Holland TN55 tractor engine horsepower is 53 hp | 39.5 kW, PTO horsepower is 42 hp | 31.3 kW, and the drawbar horsepower is 35.3 hp | 26.3 kW.
Engine HP53 hp | 39.5 kW
PTO HP42 hp | 31.3 kW
Drawbar HP35.3 hp | 26.3 kW
PTO Transfer79.2%
Torque148 lb-ft | 200.7 Nm
Displacement179 ci | 2.9 L
New Holland TN55 Horsepower Specs
Engine gross horsepower
53 hp | 39.5 kW
Engine net horsepower
50 hp | 37.3 kW
PTO horsepower claimed
42 hp | 31.3 kW
PTO horsepower tested
43.0 hp | 32.1 kW
Drawbar horsepower tested
35.3 hp | 26.3 kW
New Holland TN55 Useful Horsepower Calculations
PTO-to-engine power transfer
79.2% of engine hp reaches the PTO
Drawbar-to-engine power transfer
66.6% of engine hp reaches the drawbar
Drawbar-to-PTO power ratio
84% drawbar hp vs PTO hp
Engine size per PTO horsepower
4.3 ci per PTO hp
PTO horsepower per liter
14.5 PTO hp per L
Engine size per engine horsepower
3.4 ci per engine hp
Engine horsepower per liter
18.3 engine hp per L
Torque per PTO horsepower
3.5 lb-ft per PTO hp
Fuel tank per PTO horsepower
0.4 gal per PTO hp
New Holland TN55 Engine Specs
Displacement
179 ci | 2.9 L
Bore and stroke
4.094×4.528 inches | 104 x 115 mm
Compression
18:1
Rated RPM
2300
Torque
148 lb-ft | 200.7 Nm
Torque RPM
1400
New Holland TN55 Fuel, Cooling, Starting & Service Specs
Fuel capacity
17.3 gal | 65.5 L
Starter volts
12
Battery volts
12
New Holland TN55 Horsepower Comparison Charts
Engine horsepower comparison
This model
53 hp
Average
80 hp
Low
45 hp
High
120 hp
PTO horsepower comparison
This model
42 hp
Average
65 hp
Low
35 hp
High
105 hp
Drawbar horsepower comparison
This model
35.3 hp
Average
55 hp
Low
30 hp
High
95 hp
Displacement comparison
This model
179 ci
Average
260 ci
Low
150 ci
High
380 ci
Torque comparison
This model
148 lb-ft
Average
240 lb-ft
Low
120 lb-ft
High
420 lb-ft
Rated RPM comparison
This model
2,300 rpm
Average
2,200 rpm
Low
1,800 rpm
High
2,700 rpm
Engine size per PTO HP
This model
4.3 ci/hp
Average
3.5 ci/hp
Low
2.2 ci/hp
High
5.8 ci/hp
Benchmarks use practical low, average and high ranges for the utility tractor category. Use the operator manual and actual engine/tractor configuration before sizing implements or judging working power.
New Holland TN55 Horsepower FAQ
How much horsepower does the New Holland TN55 have?
The listed engine output is 53 hp, below the 80 hp benchmark average. That is a lower-power result, so the smarter match is lighter implements and jobs that do not demand more than about 53 hp.
How much PTO horsepower does the New Holland TN55 have?
The listed PTO output is 42 hp, below the 65 hp benchmark average. For real use, size PTO implements below or near 42 hp rather than using a bigger engine-horsepower number.
How much drawbar horsepower does the New Holland TN55 have?
The listed drawbar output is 35.3 hp, below the 55 hp benchmark average. For pulling work, the safer assumption is about 35.3 hp at the drawbar before soil, ballast and tire limits are considered.
How much engine power reaches the PTO on the New Holland TN55?
The PTO-to-engine transfer works out to 79.2%, from 53 engine hp to 42 PTO hp. That is a normal usable range for judging PTO implement fit.
How efficient is the New Holland TN55 for pulling work?
The drawbar-to-engine transfer is about 66.6%, from 53 engine hp to 35.3 drawbar hp. That gives a more grounded pulling estimate than engine horsepower alone.
Is the New Holland TN55 better judged by PTO hp or drawbar hp?
The drawbar output is about 84% of PTO output, comparing 35.3 drawbar hp with 42 PTO hp. That helps separate pulling ability from PTO implement ability.
How big is the New Holland TN55 engine?
The engine displacement is 179 ci, below the 260 ci benchmark average. Smaller displacement usually means less engine size behind each horsepower number.
Is the New Holland TN55 engine stressed for its PTO horsepower?
The engine has about 4.3 cubic inches per PTO hp, using 179 ci and 42 PTO hp. That points to a larger-displacement, lower-stress style setup.
How much PTO horsepower per liter does the New Holland TN55 make?
The output density is about 14.5 PTO hp per liter, using 42 PTO hp and 2.9 L of displacement. Higher hp/L means more output squeezed from each liter; lower hp/L usually means a more relaxed engine tune.
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.
