Start › Tractors › Fiat Trattori › Diamant-Serie › 615 (DT)

Fiat Trattori 615 (DT)

Built: 1965–1968 · Series: Diamant-Serie

More machines from model year 1965

Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required

With the 615 (DT), Fiat Trattori offers a model from the Diamant series. Production: 1965–1968. The engine delivers 65 hp (47.8 kW), has 4 cylinders, with a displacement of 4,397 cm³. Torque is 255 Nm. Rated speed is 1,900 rpm. The machine is 3,580 mm long, 1,820 mm wide and 1,690 mm high. The unladen weight is 2,720 kg. The wheelbase measures 2,170 mm. Ground clearance is 470 mm. Top speed is 24 km/h. Transmission: 7 V/2 R or 14 V/4 R. The engine is water-cooled. Tyres: front 6.50-20 ASF (DT: 9.5-24 AS), rear 13.6-36 AS. The fuel is diesel. The bore measures 108 mm. The stroke is 120 mm. The compression ratio is 15.5:1. Maximum torque is reached at 1,200 rpm. Construction: frame construction. The Diamant-Serie series covers 4 models. Rated output within it ranges from 22 to 67 hp; the 615 (DT) sits at the top of that range with 65 hp. Its immediate neighbours are the 415 (DT) below it with 45 hp and the 715 (DT) above it with 67 hp. Unladen weight within it ranges from 970 to 2,880 kg; here the 615 (DT) sits at the top of that range with 2,720 kg. 99 Fiat Trattori models across 9 series are on record.

Fiat Trattori Diamant series – Italian classics of the 1960s: twin- to four-cylinder diesels at 1,135 to 4,397 cc, 16.2 to 49.3 kW, types 215, 415, 615 and 715 (DT)

The Diamant series brought together at Fiat Trattori in Turin during the 1960s a model line from small tractor to mid-range, graded through the types 215, 415, 615 and 715. The number denotes the ascending power class, and the DT suffix the four-wheel-drive version (Doppia Trazione); the base types without DT were rear-wheel drive only. Fiat built at this time both in Turin and at its agricultural machinery site in Modena, covering with the Diamant series a wide field from small vineyard tractors to mid-power field tractors.

Read on 3 more paragraphs

The register lists 4 versions with 16.2 to 49.3 kW from twin- to four-cylinders of 1,135 to 4,397 cc displacement at 1,900 to 2,500 rpm; torque ranges from 63 to 260 Nm. Unladen weights lie between 970 and 2,880 kg, lengths between 2,601 and 3,730 mm, widths between 1,230 and 1,960 mm, and heights between 1,311 and 1,870 mm.

With its wide spread of power and dimensions, the Diamant series covered both smallholdings and special crops as well as larger arable farms, competing directly with the contemporaneous models from Same, Lamborghini and Landini, likewise from northern Italy.

On a used purchase of an older Diamant type, check corrosion on sheet metal and steering knuckles, the condition of the clutch and mechanical gearbox, and on DT four-wheel-drive versions the front-axle drive; parts for the Italian four-cylinders, less so for the twin-cylinders, are usually still obtainable through specialist dealers.

Sources: SpecCodex register, model data: Fiat Trattori Diamant-Serie

Technical data

Engine

Fuel	dieselcorrect
Power	65 hp (47.8 kW)correct
Rated speed	1,900 rpmcorrect
Torque	255 Nmcorrect
Speed at max. torque	1,200 rpmcorrect
Cylinders	4correct
Displacement	4,397 cm³correct
Bore	108 mmcorrect
Stroke	120 mmcorrect
Compression ratio	15.5correct
Cooling	water-cooledcorrect

Dimensions and weights

Length	3,580 mmcorrect
Width	1,820 mmcorrect
Height	1,690 mmcorrect
Wheelbase	2,170 mmcorrect
Ground clearance	470 mmcorrect
Unladen weight	2,720 kgcorrect

Drivetrain and chassis

Drive	rear- or four-wheel drivecorrect
Gearbox	7 V/2 R or 14 V/4 Rcorrect
Front tyres	6.50-20 ASF (DT: 9.5-24 AS)correct
Rear tyres	13.6-36 AScorrect
Top speed	24 km/hcorrect

Origin and approval

Construction	frame constructioncorrect

Where this model stands

Power-to-weight ratio: 17.6 kW/t (48 kW / 2.7 t)

Power class: Universal (40–100 hp)

Stronger than 44% 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 Fiat Trattori 615 (DT) have?

The Fiat Trattori 615 (DT) delivers 65 hp.

How much does the Fiat Trattori 615 (DT) weigh?

The unladen weight is 2,720 kg.

What engine does the Fiat Trattori 615 (DT) have?

4 cylinders, 4,397 cm³ displacement, Diesel.

How fast does the Fiat Trattori 615 (DT) go?

Top speed is 24 km/h.

What are the dimensions of the Fiat Trattori 615 (DT)?

3,580 mm × 1,820 mm × 1,690 mm.

When was the Fiat Trattori 615 (DT) built?

Production years: 1965–1968.

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.

Looking for this machine?
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
Request a quote →

Need parts for this model?
We ask the suppliers and come back with price and lead time.
Request spare parts →

This page carries 24 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.

Missing a figure you were looking for? Report it →

Know this machine better? Have a photo, a manual, or know that a figure is wrong? Add it to the register →