
Allis ChalmersModel A
Allis Chalmers D21 Series II
Row Crop
- power
- 121 hp
- displacement
- 426 ci
- Cylinders
- 6
- Forward gears
- 8
Head to head · Row Crop

Row Crop
Utility
How they compare
D21 Series II is in the 40th percentile; T5.120 is in the 39th · 1,206 models
D21 Series II is in the 72nd percentile; T5.120 is in the 10th · 1,409 models
D21 Series II is in the 50th percentile; T5.120 is in the 17th · 1,417 models
D21 Series II is in the 16th percentile; T5.120 is in the 81st · 1,200 models
Full comparison
| Spec | Allis Chalmers D21 Series II | New Holland T5.120 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | New Holland | — |
| Model | D21 Series II | T5.120 | — |
| Category | Row Crop | Utility | — |
| Spec | Allis Chalmers D21 Series II | New Holland T5.120 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | FPT | — |
| Model | 3500 | F5G | — |
| Power Output | 121hp | 120hp | ▲ D21 Series II+1 hp · <1% |
| Rated RPM | 2,200RPM | Not recorded | — |
| Cylinders | 6 | 4 | ▲ D21 Series II+2 · +50% |
| Displacement | 426ci | 207ci | ▲ D21 Series II+219 ci · +106% |
| Bore | 4.3in | 3.9in | ▲ D21 Series II+0.4 in · +10% |
| Stroke | 5in | 4.3in | ▲ D21 Series II+0.7 in · +16% |
| Spec | Allis Chalmers D21 Series II | New Holland T5.120 | Difference |
|---|---|---|---|
| Type | Sliding gear with dry disc clutch | Dual Command two-speed power shift | — |
| Spec | Allis Chalmers D21 Series II | New Holland T5.120 | Difference |
|---|---|---|---|
| Length | 160in | 161in | ▲ T5.120+1 in · <1% |
| Width | 91.3in | 75.7in | ▲ D21 Series II+15.6 in · +21% |
| Height | 106in | 107in | ▲ T5.120+1 in · <1% |
| Operating Weight | 9,502lb | 7,672lb | ▲ D21 Series II+1,830 lb · +24% |
| Spec | Allis Chalmers D21 Series II | New Holland T5.120 | Difference |
|---|---|---|---|
| System Type | Not recorded | Open Center | — |
| Steering Type | Power | Power | Same |
| Spec | Allis Chalmers D21 Series II | New Holland T5.120 | Difference |
|---|---|---|---|
| Type | Independent | 540/1000 | — |
| Speed 1 | 1,000rpm | Not recorded | — |
| Spec | Allis Chalmers D21 Series II | New Holland T5.120 | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Three-Point Hitch Category II | — |
| Hitch Category | III/II | II | — |
| Hitch Position | Rear | Rear | Same |
| Spec | Allis Chalmers D21 Series II | New Holland T5.120 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | Not recorded | — |
| Drive Type | 2WD | Not recorded | — |
| Steering Type | Power | Power | Same |
| Brake Type | Band actuated disc | Not recorded | — |
| Spec | Allis Chalmers D21 Series II | New Holland T5.120 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
| Spec | Allis Chalmers D21 Series II | New Holland T5.120 | Difference |
|---|---|---|---|
| Coolant | 7.8gal | Not recorded | — |
| Spec | Allis Chalmers D21 Series II | New Holland T5.120 | Difference |
|---|---|---|---|
| Type | Open | ROPS | — |
Category context