Porsche Diesel AP22S
Built: 1957–1958 · Series: AP
More machines from model year 1957
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Porsche Diesel AP range – early Allgaier-Porsche tractors AP16 to AP22S from Friedrichshafen, 12 to 16 kW, two-cylinder engines of 1,374 to 1,531 cm³, 16 to 22 hp
The AP range stands at the beginning of the Porsche Diesel story: it grew out of the cooperation between Allgaier and Porsche in Friedrichshafen on Lake Constance, before Porsche took over the tractor business fully in 1956; the AP code refers to this Allgaier-Porsche phase of the 1950s. The type numbers 16, 17 and 22 directly denote the power in hp, and the S suffix on the AP22S an uprated version.
Read on 3 more paragraphs
The register lists here 3 versions with 11.8 to 16.1 kW, or 16 to 22 hp, from two-cylinder engines of 1,374 to 1,531 cm³, unladen weights from 1,017 to 1,115 kg, lengths from 2,550 to 2,640 mm, widths from 1,052 to 1,530 mm, heights from 1,420 to 1,495 mm and a rated speed of 2,000 rpm.
At around 16 to 22 hp, the AP range belonged to the lower class of West German post-war tractors and competed with comparable small tractors from Fendt, Eicher and Hanomag; it served mainly smaller farms during the early mechanisation of agriculture.
On a used AP tractor, the condition and tightness of the air-cooled two-cylinder diesel engine, rust on the sheet-metal panels and wings, the condition of the steering and brakes, and the completeness of fittings such as the PTO and belt pulley all count, as these are often missing or were retrofitted on these early models. It is also worth checking the originality of the type plate, since engines swapped from other models in the range do occur on tractors of this class.
Sources: SpecCodex register, model data: Porsche Diesel AP-Baureihe
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 22 hp (16.1 kW)correct |
| Cylinders | 2correct |
| Displacement | 1,531 cm³correct |
Dimensions and weights
| Length | 2,640 mmcorrect |
|---|---|
| Width | 1,052 mmcorrect |
| Height | 1,495 mmcorrect |
| Wheelbase | 1,620 mmcorrect |
| Unladen weight | 1,070 kgcorrect |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Gearbox | 5/1-Getriebecorrect |
| Forward gears | 5correct |
| Reverse gears | 1correct |
| Front tyres | 5.00-16correct |
| Rear tyres | 8-24correct |
| Top speed | 20 km/hcorrect |
Origin and approval
| Construction | frameless unit constructioncorrect |
|---|
Where this model stands
Power-to-weight ratio: 15 kW/t (16 kW / 1.1 t)
Power class: Compact (< 40 hp)
Stronger than 9% 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 Porsche Diesel AP22S have?
The Porsche Diesel AP22S delivers 22 hp.
How much does the Porsche Diesel AP22S weigh?
The unladen weight is 1,070 kg.
What engine does the Porsche Diesel AP22S have?
2 cylinders, 1,531 cm³ displacement, Diesel.
How fast does the Porsche Diesel AP22S go?
Top speed is 20 km/h.
What are the dimensions of the Porsche Diesel AP22S?
2,640 mm × 1,052 mm × 1,495 mm.
When was the Porsche Diesel AP22S built?
Production years: 1957–1958.
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.
- Shift the gearbox cold and warm — jumps only show up at temperature.
- 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 19 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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Other models in this series
Sources: [1]
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