Oliver OC-4
The Oliver OC-4 is a compact and versatile tractor that was first made in 1958. It's powered by a Hercules diesel engine with 3 cylinders and 130 cubic inches of displacement. This engine can produce 30.45 horsepower at 1700 RPM, making it suitable for various farm tasks. The OC-4 has a gear transmission with 4 forward gears and 1 reverse gear, giving farmers good control over their work speed. It's equipped with a Category 3 hitch, which allows it to handle larger implements. The tractor measures 111 inches long and 60 inches wide, with an operating weight of 4,720 pounds. It has an electric starter for easy operation and a coolant capacity of 12 quarts to keep the engine running smoothly. Oliver, known for making reliable farm equipment, designed this tractor to be a dependable workhorse for small to medium-sized farms.

Quick specs
- Category
- Utility
- Engine Power Output
- 30hp
- Operating Weight
- 4,720 lb
- Transmission
- Gear
At a glance
How the OC-4 compares
vs. Utility medianDistribution
Engine Power (hp)
Across all Utility tractors
This model
The OC-4 ranks at the 23rd percentile for engine power among recorded utility tractors.
Overview
About the Oliver OC-4
The Oliver OC-4 is a compact and versatile tractor that was first made in 1958. It's powered by a Hercules diesel engine with 3 cylinders and 130 cubic inches of displacement. This engine can produce 30.45 horsepower at 1700 RPM, making it suitable for various farm tasks. The OC-4 has a gear transmission with 4 forward gears and 1 reverse gear, giving farmers good control over their work speed. It's equipped with a Category 3 hitch, which allows it to handle larger implements. The tractor measures 111 inches long and 60 inches wide, with an operating weight of 4,720 pounds. It has an electric starter for easy operation and a coolant capacity of 12 quarts to keep the engine running smoothly. Oliver, known for making reliable farm equipment, designed this tractor to be a dependable workhorse for small to medium-sized farms.
Full specifications
Every recorded spec
General
| Manufacturer | Oliver |
|---|---|
| Model | OC-4 |
| Category | Utility tractor |
| Years built | 1958+ |
| Operating weight | 4,720lb |
Engine
| Make | Hercules |
|---|---|
| Power | 30.45hp |
| Cylinders | 3 |
| Displacement | 130ci |
| Bore | 3.5in |
| Stroke | 4.5in |
Transmission
| Type | Gear |
|---|---|
| Forward gears | 4 |
| Reverse gears | 1 |
Dimensions
| Length | 111in |
|---|---|
| Width | 60in |
| Operating weight | 4,720lb |
Capacities
| Cooling system | 3gal |
|---|
Head to head
OC-4 vs. Utility median
How the Oliver OC-4 compares to other Utility tractors
| Spec | This model | Utility median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 30.5 hp | 55 hp | -45% | 23rd |
| Engine Displacement | 130 ci | 183 ci | -29% | 31st |
| Cylinders | 3 | 4 | -25% | 23rd |
| Forward Gears | 4 | 12 | -67% | 4th |
| Operating Weight | 4,720 lb | 5,303 lb | -11% | 45th |
| Length | 111 in | 137 in | -19% | 17th |
| Width | 60 in | 66 in | -9% | 37th |
Medians and percentiles are computed from the utility tractors in our database with a recorded value for each spec (sample sizes 3,933–5,720 models).
Compare to tractors with similar specs
Commonly compared Oliver tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Oliver 500 | 35 hp | 4,094 lb | — | Compare → |
| Oliver Super 55 | 35.91 hp | 3,400 lb | 1954–1958 | Compare → |
| Oliver 550 | 44.31 hp | 3,730 lb | 1958–1975 | Compare → |
| Oliver 1365 | 59 hp | 4,410 lb | 1971–1975 | Compare → |
| Oliver 1250 | — | 3,280 lb | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| AGCO ST30 | 30.3 hp | 2,594 lb | — | Compare → |
| Allis Chalmers UC | 30.93 hp | 5,710 lb | — | Compare → |
| Allis Chalmers 5030 | 31 hp | 2,530 lb | 1979–1985 | Compare → |
| Allis Chalmers D12 | 31 hp | 2,800 lb | 1959–1968 | Compare → |
| Antonio Carraro Tigre 4000 | 31 hp | — | — | Compare → |
Explore
Oliver siblings
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Gallery
Oliver OC-4 photos



FAQ
Common questions
When was the Oliver OC-4 in production?
The Oliver OC-4 was introduced in 1958.
What hitch category is the Oliver OC-4?
The Oliver OC-4 uses a Category Category 3 hitch.
How much horsepower does the Oliver OC-4 have?
The Oliver OC-4 produces 30.45 hp from its 3-cylinder engine. Engine displacement is 130 ci.
How much does the Oliver OC-4 weigh?
The Oliver OC-4 weighs about 4,720 lb in operating condition.
What transmission is in the Oliver OC-4?
Transmission on the Oliver OC-4 is Gear, with 4 forward speeds.
What maintenance does the Oliver OC-4 require?
Like any tractor, the Oliver OC-4 needs periodic engine oil and filter changes, hydraulic fluid checks, and regular greasing and inspection. The owner's manual lists the manufacturer's recommended service intervals.
