- Rigid chassis
- WhichTractor size: Utility
- Lab tested ×1
- 2002–2007
It sits on the utility/standard-size boundary, so either size is a fair description. WhichTractor size, not the maker’s category
John Deere 6620 Engine specifications
19 engine values on record for the 6620.
Engine power, claimed · gross or net not stated
123 hp
92 kW as stated by the source
Not independently tested
Claimed · standard not stated by the source
Source · Traktorenlexikon, “John Deere 6620”, claimed
What engine is in the diesel 6620?
The diesel 6620 has a John Deere PowrTech 6.068 HLA-070/V2-DE or 6.068 HL-471/HP, a 6-cylinder 6.79 L diesel engine. Fitted to 6620.
| Make & model | John Deere PowrTech 6.068 HLA-070/V2-DE or 6.068 HL-471/HP |
|---|---|
| Fuel | Diesel |
| Cylinders | 6 |
| Displacement | 414.2 ci · 6.79 L |
| Cooling | Liquid-cooled |
| Maximum torque | 353 lb·ft · 479.0 N·mSource 1 |
| Maximum torque speed | 1,501 rpmSource 1 |
| Air cleaner | DONALDSON Power Core air filter |
| Cylinders | 6 |
| Displacement | 7.2 qt · 6.8 L |
| Bore | 4.2 in · 106.5 mm |
| Stroke | 5.0 in · 127 mm |
| Rated engine speed | 2,300 rpm |
| Torque rise | 40 % |
Source · Traktorenlexikon, “John Deere 6620”
What engine is in a 6620?
A 6620 has a John Deere 6068HLA70 (DD20011), a 6-cylinder 6.79 L engine. Fitted to 6620 (4 WD).
| Make & model | John Deere 6068HLA70 (DD20011) |
|---|---|
| Cylinders | 6 |
| Displacement | 414.2 ci · 6.79 L |
| Aspiration | Supercharged |
Source · OECD test report 2038, 2003
How much fuel does a 6620 use?
On OECD Test 2038, the 6620 used 6.51 gal/h (24.6 L/h) at maximum power.
| Fuel consumption, at maximum power | 6.51 gal/h · 24.6 L/h |
|---|---|
| Fuel consumption, at rated engine speed | 6.67 gal/h · 25.2 L/h |
| Fuel consumption, at standard PTO speed | 6.68 gal/h · 25.3 L/h |
| Engine speed, at maximum power | 2,001 rpm |
| Engine speed, at rated engine speed | 2,300 rpm |
| Engine speed, at standard PTO speed | 2,208 rpm |
| Maximum torque | 353 lb·ft · 479.0 N·m |
| Torque rise | 40.9% |
Source · OECD test report 2038, 2003
Where this page comes from
19 engine values from Traktorenlexikon, “John Deere 6620”; and OECD test report 2038, 2003.
Sources
Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution
- OECD Code 2 test report 2/2 038: John Deere 6620 — Licence not stated by the publisher; facts cited, OECD-2038 · published 2003-01-22 · retrieved 2026-09-14. OECD; testing station DLG, Gross-Umstadt, Germany. Original document
- Traktorenlexikon: John Deere 6620 — CC BY-SA 4.0, WIKIBOOKS-TL-51301 · revision 1027751. Wikibooks contributors (Traktorenlexikon). Original document