10 material differences · fewer than 12
Tractor oneDavid Brown 990 Selectmatic1965–1979No measured PTO figureTractor twoMassey Ferguson MF 1581972–1976No measured PTO figure
Which should you choose?
Read our verdict on the 990 Selectmatic and the MF 158 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
10 material differences · 3 fields identical or within 5%, which is not counted as material
| Field | 990 Selectmatic | MF 158 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | — | 55.3 hp | — |
| Engine declared | DAVID BROWN AD 4/47 or AD 4/49 A (B) | Perkins AD 4.203 | differs |
| Displacement declared | — | 3.34 L | — |
| Maximum torque declared | 140 lb·ft · 190 N·m | 141 lb·ft · 191 N·m | — |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 12.4 mph · 20 km/h | +25% 990 Selectmatic |
| Clutch declared | pedal-operated dry Borg & Beck single-disc clutch | Pedal operated dry and air-cooled MF double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 7.3 gpm · 27.5 L/min | 4.0 gpm · 15.1 L/min | +82% 990 Selectmatic |
| Pressure declared | — | 2,930 psi · 202 bar | — |
| Rear PTO speeds declared | 540 rpm | 1146 | differs |
| Weight & dimensions | |||
| Unladen weight declared | 5,688 lb · 2,580 kg | 5,423 lb · 2,460 kg | — |
| Maximum permissible mass declared | — | 8,378 lb · 3,800 kg | — |
| Wheelbase declared | 78.7 in · 2,000 mm | 84.3 in · 2,140 mm | +7% MF 158 |
| Length declared | 126.0 in · 3,200 mm | 138.2 in · 3,510 mm | +10% MF 158 |
| Width declared | 67.0 in · 1,702 mm | 73.6 in · 1,870 mm | +10% MF 158 |
| Ground clearance declared | 21.4 in · 543 mm | 15.4 in · 390 mm | +39% 990 Selectmatic |
| Turning radius, braked declared | 10.3 ft · 3.14 m | 9.9 ft · 3.03 m | — |
| Fuel tank declared | 64.9 qt · 61.4 L | 72.1 qt · 68.2 L | +11% MF 158 |
Height is not in this table. It is not one measurement: the sources measure it to different points — over the cab on some machines, over the steering wheel or the exhaust on others — and the same tractor measured two ways can differ by most of a metre. It appears here only when both machines' figures carry the point they were measured to and it is the same point, which is not the case for these two. Each machine's own page prints its height as its source gives it.
David Brown 990 Selectmatic sources
- Source: Traktorenlexikon, “David Brown 990”
Massey Ferguson MF 158 sources
- Source: Traktorenlexikon, “Massey Ferguson MF 158”
- Source: Traktorenlexikon, “Eicher 3354 Mammut 74 A”
- Source: Traktorenlexikon, “Massey Ferguson MF 158 S”