The New Holland Boomer 45D tractor engine horsepower is 45 hp | 33.6 kW, and PTO horsepower is 36 hp | 26.8 kW.
Engine HP45 hp | 33.6 kW
PTO HP36 hp | 26.8 kW
PTO Transfer80%
Displacement135.2 ci | 2.2 L
New Holland Boomer 45D Horsepower Specs
Engine horsepower
45 hp | 33.6 kW
PTO horsepower claimed
36 hp | 26.8 kW
New Holland Boomer 45D Useful Horsepower Calculations
PTO-to-engine power transfer
80% of engine hp reaches the PTO
Engine size per PTO horsepower
3.8 ci per PTO hp
PTO horsepower per liter
16.4 PTO hp per L
Engine size per engine horsepower
3 ci per engine hp
Engine horsepower per liter
20.5 engine hp per L
Rated speed per PTO horsepower
72.2 rpm per PTO hp
New Holland Boomer 45D Engine Specs
Displacement
135.2 ci | 2.2 L
Bore and stroke
3.31×3.94 inches | 84 x 100 mm
Rated RPM
2600
New Holland Boomer 45D Fuel, Cooling, Starting & Service Specs
Starter volts
12
Battery volts
12
New Holland Boomer 45D Horsepower Comparison Charts
Engine horsepower comparison
This model
45 hp
Average
35 hp
Low
15 hp
High
60 hp
PTO horsepower comparison
This model
36 hp
Average
28 hp
Low
12 hp
High
50 hp
Displacement comparison
This model
135.2 ci
Average
110 ci
Low
50 ci
High
180 ci
Rated RPM comparison
This model
2,600 rpm
Average
2,400 rpm
Low
1,800 rpm
High
3,000 rpm
Engine size per PTO HP
This model
3.8 ci/hp
Average
3.1 ci/hp
Low
1.8 ci/hp
High
5 ci/hp
Benchmarks use practical low, average and high ranges for the compact and small utility tractor category. Use the operator manual and actual engine/tractor configuration before sizing implements or judging working power.
New Holland Boomer 45D Horsepower FAQ
How much horsepower does the New Holland Boomer 45D have?
The listed engine output is 45 hp, above the 35 hp benchmark average. That is a higher-power result, so ballast, tire setup and implement width matter if you want to use the full 45 hp.
How much PTO horsepower does the New Holland Boomer 45D have?
The listed PTO output is 36 hp, above the 28 hp benchmark average. That is the number to use for mowers, balers, augers, pumps and other PTO tools that need up to about 36 hp.
How much engine power reaches the PTO on the New Holland Boomer 45D?
The PTO-to-engine transfer works out to 80%, from 45 engine hp to 36 PTO hp. That is a normal usable range for judging PTO implement fit.
How big is the New Holland Boomer 45D engine?
The engine displacement is 135.2 ci, above the 110 ci benchmark average. Bigger displacement can help low-rpm pull and load-holding feel.
Is the New Holland Boomer 45D engine stressed for its PTO horsepower?
The engine has about 3.8 cubic inches per PTO hp, using 135.2 ci and 36 PTO hp. That points to a larger-displacement, lower-stress style setup.
How much PTO horsepower per liter does the New Holland Boomer 45D make?
The output density is about 16.4 PTO hp per liter, using 36 PTO hp and 2.2 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 Boomer 45D rated at?
The rated speed is 2,600 rpm, close to the 2,400 rpm benchmark average. The 2,600 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.
