2.9L Industrial Diesel Engine
  • PowerTech ™ 
  • 36 - 59 kW (48 - 79 hp)
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Get details on 48 to 79 hp, 36 to 59 kW John Deere 3029TF120 industrial diesel engines for OEM equipment, including features, specs, and integrated support.
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Dynamically balanced crankshaft
  • Journal surfaces induction-hardened for significantly increased wear life
Forged-steel connecting rods
  • 45-degree connecting-rod/cap-joint design allows the use of larger crankshaft-connecting-rod bearings for increased durability
Replaceable wet-type cylinder liners
  • Provides excellent heat dissipation
Strong cylinder block
  • Weight of cylinder block reduced, while maintaining overall strength
  • Crankshaft supported by four main bearings
Easy to apply
  • Mounting points for new engine have not been changed, making it easy to replace previous model
  • Additional front engine mounts are available for application ease
Compact size
  • Compact, in-line 3-cylinder configuration allows model to be used in applications where length is critical
Optional gear auxiliary drive
  • Optional drive, with an SAE "A" flange, increases application flexibility of the 3-cylinder engine
World-class performance
  • Higher torque rise, excellent fuel economy, and low oil consumption result in superior engine performance
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General Engine Data
Number of cylinders
Displacement-- L (cu in)
2.9 (177)
Bore and Stroke-- mm (in)
106 x 110 (4.17 x 4.33)
Compression Ratio
Engine Type
In-line, 4-Cycle
Length - mm (in)
716 (28.2)
Width-- mm (in)
519 (20.4)
Height-- mm (in)
928 (36.5)
Weight, dry - kg (lb)
328 (723)
Performance Data Range
Intermittent - Rated power/Rated speed
36-59 kW (48-79 hp) @2500 rpm
Intermittent - Peak power
37-59 kW (50-79 hp) @2400-2500 rpm
Intermittent - Peak torque
189-269 N·m (139-198 ft-lb) @1000-1800 rpm
Intermittent - Torque rise
Emissions Certifications
Non-Emissions Certified
We want to make owning and operating your equipment simple and affordable. 
We have a range of finance options to suit any customer.  Contact your local Emmetts branch, or visit these sites for more information and a free quote.
John Deere FinancialEmmetts Finance
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