7 material differences · fewer than 12
Tractor oneIMT 5551964–1971No measured PTO figureTractor twoPorsche-Diesel Master 4291961–1963No measured PTO figure
Which should you choose?
Read our verdict on the 555 and the Master 429 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
7 material differences · 5 fields identical or within 5%, which is not counted as material
| Field | 555 | Master 429 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 49.3 hp | 49.3 hp | — |
| Engine declared | IMR-PERKINS O-34/TA | Porsche-Diesel F 429 | differs |
| Displacement declared | 3.34 L | 3.50 L | — |
| Maximum torque declared | 141 lb·ft · 191 N·m | — | — |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 16.8 mph · 27 km/h | +8% Master 429 |
| Clutch declared | Pedal operated dry two-stage double clutch | — | — |
| Hydraulics & hitch | |||
| Pump flow declared | 4.0 gpm · 15.1 L/min | 4.2 gpm · 16.0 L/min | +6% Master 429 |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 4,123 lb · 1,870 kg | 3,942 lb · 1,788 kg | — |
| Wheelbase declared | 84.8 in · 2,155 mm | 77.2 in · 1,960 mm | +10% 555 |
| Length declared | 137.2 in · 3,485 mm | 123.6 in · 3,140 mm | +11% 555 |
| Width declared | 66.9 in · 1,700 mm | 69.9 in · 1,775 mm | — |
| Ground clearance declared | 23.9 in · 607 mm | 15.7 in · 400 mm | +52% 555 |
| Turning radius, braked declared | 12.3 ft · 3.75 m | — | — |
| Fuel tank declared | 47.6 qt · 45.0 L | 63.4 qt · 60 L | +33% Master 429 |
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.
IMT 555 sources
- Source: Traktorenlexikon, “IMT 555”
Porsche-Diesel Master 429 sources
- Source: Traktorenlexikon, “Porsche-Diesel Master V429”