The Massey Ferguson 4243 tractor engine horsepower is 85 hp | 63.4 kW, PTO horsepower is 75 hp | 55.9 kW, and the drawbar horsepower is 63.2 hp | 47.1 kW.
Massey Ferguson 4243 Horsepower Specs
| Engine net horsepower | 85 hp | 63.4 kW |
|---|---|
| PTO horsepower claimed | 75 hp | 55.9 kW |
| PTO horsepower tested | 75.2 hp | 56.1 kW |
| Drawbar horsepower tested | 63.2 hp | 47.1 kW |
Massey Ferguson 4243 Useful Horsepower Calculations
| PTO-to-engine power transfer | 88.2% of engine hp reaches the PTO |
|---|---|
| Drawbar-to-engine power transfer | 74.4% of engine hp reaches the drawbar |
| Drawbar-to-PTO power ratio | 84.3% drawbar hp vs PTO hp |
| Engine size per PTO horsepower | 3.2 ci per PTO hp |
| PTO horsepower per liter | 18.8 PTO hp per L |
| Engine size per engine horsepower | 2.9 ci per engine hp |
| Engine horsepower per liter | 21.2 engine hp per L |
| Torque per PTO horsepower | 3.1 lb-ft per PTO hp |
| Rated speed per PTO horsepower | 29.3 rpm per PTO hp |
Massey Ferguson 4243 Engine Specs
| Engine type | turbocharged diesel |
|---|---|
| Displacement | 243.5 ci | 4.0 L |
| Bore and stroke | 3.937×5.00 inches | 100 x 127 mm |
| Compression | 17.3:1 |
| Rated RPM | 2200 |
| Torque | 229 lb-ft | 310.5 Nm |
| Torque RPM | 1500 |
Massey Ferguson 4243 Fuel, Cooling, Starting & Service Specs
| Starter volts | 12 |
|---|---|
| Battery volts | 12 |
Massey Ferguson 4243 Horsepower Comparison Charts
Engine horsepower comparison
PTO horsepower comparison
Drawbar horsepower comparison
Displacement comparison
Torque comparison
Rated RPM comparison
Engine size per PTO 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.
Massey Ferguson 4243 Horsepower FAQ
How much horsepower does the Massey Ferguson 4243 have?
The listed engine output is 85 hp, close to the 80 hp benchmark average. That puts the tractor in a normal working range for this benchmark group, with 85 hp as the main engine number.
How much PTO horsepower does the Massey Ferguson 4243 have?
The listed PTO output is 75 hp, above the 65 hp benchmark average. That is the number to use for mowers, balers, augers, pumps and other PTO tools that need up to about 75 hp.
How much drawbar horsepower does the Massey Ferguson 4243 have?
The listed drawbar output is 63.2 hp, above the 55 hp benchmark average. That makes the 63.2 hp drawbar number more useful than engine hp for tillage and heavy pulling.
How much engine power reaches the PTO on the Massey Ferguson 4243?
The PTO-to-engine transfer works out to 88.2%, from 85 engine hp to 75 PTO hp. That is a normal usable range for judging PTO implement fit.
How efficient is the Massey Ferguson 4243 for pulling work?
The drawbar-to-engine transfer is about 74.4%, from 85 engine hp to 63.2 drawbar hp. That gives a more grounded pulling estimate than engine horsepower alone.
Is the Massey Ferguson 4243 better judged by PTO hp or drawbar hp?
The drawbar output is about 84.3% of PTO output, comparing 63.2 drawbar hp with 75 PTO hp. That helps separate pulling ability from PTO implement ability.
How big is the Massey Ferguson 4243 engine?
The engine displacement is 243.5 ci, close to the 260 ci benchmark average. It is close to the normal engine-size range for this horsepower class.
Is the Massey Ferguson 4243 engine stressed for its PTO horsepower?
The engine has about 3.2 cubic inches per PTO hp, using 243.5 ci and 75 PTO hp. That is close to the normal benchmark for this category.
How much PTO horsepower per liter does the Massey Ferguson 4243 make?
The output density is about 18.8 PTO hp per liter, using 75 PTO hp and 4 L of displacement. Higher hp/L means more output squeezed from each liter; lower hp/L usually means a more relaxed engine tune.
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 masseyferguson.com website before buying parts, sizing implements or making repair decisions.

