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HesstonModel A
Hesston 420
Agricultural
- power
- Not recorded
- displacement
- 143 ci
- Cylinders
- 3
- Forward gears
- 6
Head to head · Agricultural
Agricultural

Standard Tread
How they compare
420 is in the 5th percentile; OS-4 is in the 5th · 1,083 models
420 is in the 8th percentile; OS-4 is in the 31st · 1,130 models
420 is in the 11th percentile; OS-4 is in the 7th · 972 models
420 is in the 5th percentile; OS-4 is in the 6th · 971 models
Full comparison
| Spec | Hesston 420 | McCormick-Deering OS-4 | Difference |
|---|---|---|---|
| Manufacturer | Hesston | McCormick-Deering | — |
| Model | 420 | OS-4 | — |
| Category | Agricultural | Standard Tread | — |
| Spec | Hesston 420 | McCormick-Deering OS-4 | Difference |
|---|---|---|---|
| Manufacturer | UTB/Fiat | International Harvester | — |
| Rated RPM | Not recorded | 1,650RPM | — |
| Cylinders | 3 | 4 | ▲ OS-4+1 · +33% |
| Displacement | 143ci | 152ci | ▲ OS-4+9 ci · +6% |
| Bore | Not recorded | 3.4in | — |
| Stroke | Not recorded | 4.5in | — |
| Spec | Hesston 420 | McCormick-Deering OS-4 | Difference |
|---|---|---|---|
| Type | Manual | Gear | — |
| Spec | Hesston 420 | McCormick-Deering OS-4 | Difference |
|---|---|---|---|
| Length | Not recorded | 121in | — |
| Width | Not recorded | 55.5in | — |
| Height | Not recorded | 57.1in | — |
| Operating Weight | 3,920lb | 4,120lb | ▲ OS-4+200 lb · +5% |
| Spec | Hesston 420 | McCormick-Deering OS-4 | Difference |
|---|---|---|---|
| Front Tread Width | Not recorded | 5.5in | — |
| Spec | Hesston 420 | McCormick-Deering OS-4 | Difference |
|---|---|---|---|
| Hitch Category | Not recorded | Category 3 | — |
| Spec | Hesston 420 | McCormick-Deering OS-4 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | Not recorded | — |
| Drive Type | 2WD | Not recorded | — |
| Spec | Hesston 420 | McCormick-Deering OS-4 | Difference |
|---|---|---|---|
| Coolant | Not recorded | 4.3gal | — |
Category context