Mccormick Deering F-12 G
Built: 1937–1940 · Series: F-12 Serie
More machines from model year 1937
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McCormick-Deering F-12 G of the F-12 series (International Harvester): a water-cooled four-cylinder row-crop tractor producing 11 kW (15 hp), running on petrol or kerosene, built 1937 to 1940, with a 15 km/h top speed.
McCormick-Deering was the tractor brand of the International Harvester Company (IHC) in the United States, formed in 1902 from the merger of the McCormick Harvesting Machine Company and the Deering Harvester Company. The F-12 was among the brand's smaller row-crop tractors in the 1930s; the F-12 G model is recorded for the period 1937 to 1940.
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The F-12 G is powered by a water-cooled four-cylinder engine with 1,853 cm3 displacement, which could run on either petrol or tractor vaporising oil (kerosene), as was common on many pre-war tractors in this price class. At a rated speed of 1,400 rpm it produces 11 kW (15 hp). At 1,675 kg, with a wheelbase of 1,950 mm and a design top speed of 15 km/h, it is a light, slow-running tractor.
As a small row-crop tractor of the 1930s, the F-12 G was built to work between narrow plant rows, with a narrow front axle and high ground clearance, as North American root-crop and maize production required at the time. Running on kerosene meant warming the engine up on petrol until it reached operating temperature, a common method of the era for using the cheaper fuel.
When buying a 1930s F-12 G, the state of the cooling system and cylinder head come first, since gaskets and coolant lines are especially prone to failure after nearly ninety years. On a carburettor set up for kerosene operation, check whether it is still original or has been converted to petrol-only running, and spare parts for pre-war IHC machinery are now mainly found through specialist collectors and vintage-tractor dealers.
Sources: SpecCodex-Register: Kennwerte des Modells McCormick-Deering F-12 G
Technical data
Engine
| Fuel | Benzin, Petroleumcorrect |
|---|---|
| Power | 15 hp (11 kW)correct |
| Rated speed | 1,400 rpmcorrect |
| Cylinders | 4correct |
| Displacement | 1,853 cm³correct |
| Bore | 76.2 mmcorrect |
| Stroke | 101.6 mmcorrect |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 2,930 mmcorrect |
|---|---|
| Width | 1,900 mmcorrect |
| Height | 1,500 mmcorrect |
| Wheelbase | 1,950 mmcorrect |
| Ground clearance | 250 mmcorrect |
| Unladen weight | 1,675 kgcorrect |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Front tyres | 5.00 x 16correct |
| Rear tyres | 11.25 x 24correct |
| Top speed | 15 km/hcorrect |
Origin and approval
| Construction | frame constructioncorrect |
|---|---|
| Units built | 3,973correct |
Where this model stands
Power-to-weight ratio: 6.6 kW/t (11 kW / 1.7 t)
Power class: Compact (< 40 hp)
Stronger than 3% of the tractors in the register — out of 15,663 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Mccormick Deering F-12 G have?
The Mccormick Deering F-12 G delivers 15 hp.
How much does the Mccormick Deering F-12 G weigh?
The unladen weight is 1,675 kg.
What engine does the Mccormick Deering F-12 G have?
4 cylinders, 1,853 cm³ displacement, Benzin, Petroleum.
How fast does the Mccormick Deering F-12 G go?
Top speed is 15 km/h.
What are the dimensions of the Mccormick Deering F-12 G?
2,930 mm × 1,900 mm × 1,500 mm.
When was the Mccormick Deering F-12 G built?
Production years: 1937–1940.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 21 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Sources: Wikibooks Traktorenlexikon (CC BY-SA 4.0) (retrieved August 2026) · Values adopted and presented in our own form; changes from the source are possible. · How we check the data
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.
