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181 Results
181 Results 
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Used Ajax DP-115 Natural Gas Engine
1 of 12
Used Ajax DP-115 Natural Gas Engine

Used Ajax DP-115 Engine with following features: • 115 HP • 200/360 RPM • Single Cylinder • Size: DP - 115 • Dims ( 75" L x 23" W x 24" H )

Used Ajax DP-115 Natural Gas Engine
1 of 12
  • 115 HP
  • 200-360 RPM
  • Stock No: 60132
115
200-360
Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 3
Used Ajax 7 1/4x8 EA-30 Natural Gas Engine

Used Ajax 7 1/4x8 EA-30 Pumpjack Engine with following features: • 30 HP • 350-650 RPM • 1 Cylinder, 4 stroke • 184 mm (7.25 in) Bore • 203 mm (10 in) Stroke • 5.41 L (330 in3) Displacement • Weight 2,950 (dry weight, engine only) • Dims 72"Lx46"Wx55"H

Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 3
  • 30 HP
  • 350-650 RPM
  • Stock No: 59070
30
350-650
Used Ajax 6 1/2x8 EA-22 Natural Gas Engine
1 of 3
Used Ajax 6 1/2x8 EA-22 Natural Gas Engine

Used Ajax 6 1/2x8 EA-22 Pumpjack Engine with following features: • 22 HP • 350-650 RPM • 1 Cylinder, 4 stroke • 165 mm (6.5 in) Bore • 203 mm (8 in) Stroke • 4.34 L (265 in3) Displacement • Weight 2,900 lbs (dry weight, engine only) • Dims 72"Lx46"Wx51"H

Used Ajax 6 1/2x8 EA-22 Natural Gas Engine
1 of 3
  • 22 HP
  • 350-650 RPM
  • Stock No: 59069
22
350-650
Used Ajax 6 1/2x8 EA-22 Natural Gas Engine
1 of 3
Used Ajax 6 1/2x8 EA-22 Natural Gas Engine

Used Ajax 6 1/2x8 EA-22 Pumpjack Engine with following features: • 22 HP • 350-650 RPM • 1 Cylinder, 4 stroke • 165 mm (6.5 in) Bore • 203 mm (8 in) Stroke • 4.34 L (265 in3) Displacement • Weight 2,900 lbs (dry weight, engine only) • Dims 72"Lx46"Wx51"H

Used Ajax 6 1/2x8 EA-22 Natural Gas Engine
1 of 3
  • 22 HP
  • 300-525 RPM
  • Stock No: 59068
22
300-525
Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 4
Used Ajax 7 1/4x8 EA-30 Natural Gas Engine

Used Ajax 7 1/4x8 EA-30 Pumpjack Engine with following features: • 30 HP • 350-650 RPM • 1 Cylinder, 4 stroke • 184 mm (7.25 in) Bore • 203 mm (10 in) Stroke • 5.41 L (330 in3) Displacement • Weight 2,950 (dry weight, engine only) • Dims 72"Lx46"Wx36"H

Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 4
  • 30 HP
  • 350-650 RPM
  • Stock No: 59067
30
350-650
Used Ajax 6 1/2x8 EA-22 Natural Gas Engine
1 of 4
Used Ajax 6 1/2x8 EA-22 Natural Gas Engine

Used Ajax 6 1/2x8 EA-22 Pumpjack Engine with following features: • 22 HP • 350-650 RPM • 1 Cylinder, 4 stroke • 165 mm (6.5 in) Bore • 203 mm (8 in) Stroke • 4.34 L (265 in3) Displacement • Weight 2,900 lbs (dry weight, engine only) • Dims 72"x46"Wx36"H

Used Ajax 6 1/2x8 EA-22 Natural Gas Engine
1 of 4
  • 22 HP
  • 350-650 RPM
  • Stock No: 59066
22
350-650
Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 3
Used Ajax 7 1/4x8 EA-30 Natural Gas Engine

Used Ajax 7-1/4x8 EA-30 Pumpjack Engine with following features: • 30 HP • 350-650 RPM • 1 Cylinder, 4 stroke • 184 mm (7.25 in) Bore • 203 mm (10 in) Stroke • 5.41 L (330 in3) Displacement • Weight 2,950 (dry weight, engine only) • Dims 72"Lx46"Wx36"H

Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 3
  • 30 HP
  • 350-650 RPM
  • Stock No: 59065
30
350-650
Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 3
Used Ajax 7 1/4x8 EA-30 Natural Gas Engine

Used Ajax 7 1/4x8 EA-30 Pumpjack Engine with following features: • 30 HP • 350-650 RPM • 1 Cylinder, 4 stroke • 184 mm (7.25 in) Bore • 203 mm (10 in) Stroke • 5.41 L (330 in3) Displacement • Weight 2,950 (dry weight, engine only) • Dims 72"Lx46"Wx36"H

Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 3
  • 30 HP
  • 350-650 RPM
  • Stock No: 59064
30
350-650
Used Ajax WL/EA-15 Natural Gas Engine
1 of 4
Used Ajax WL/EA-15 Natural Gas Engine

Used Ajax WL/EA-15 Pumpjack Engine with following features: • 15 HP • 350-650 RPM • 1 Cylinder, 4 stroke • 127 mm (5.0 in) Bore • 165.1mm (6.5 in) Stroke • 2.09 L (128 in3) Displacement • Weight 1,770 (dry weight, engine only) • Dims 58"Lx44"Wx39"H

Used Ajax WL/EA-15 Natural Gas Engine
1 of 4
  • 15 HP
  • 350-650 RPM
  • Stock No: 59063
15
350-650
Used Ajax WL/EA-15 Natural Gas Engine
1 of 4
Used Ajax WL/EA-15 Natural Gas Engine

Used Ajax WL/EA-15 Pumpjack Engine with following features: • 15 HP • 350-650 RPM • 1 Cylinder, 4 stroke • 127 mm (5.0 in) Bore • 165.1mm (6.5 in) Stroke • 2.09 L (128 in3) Displacement • Weight 2,950 (dry weight, engine only) • Dims 58"Lx44"Wx39"H

Used Ajax WL/EA-15 Natural Gas Engine
1 of 4
  • 15 HP
  • 350-650 RPM
  • Stock No: 59062
15
350-650
Used Ajax 7 1/2x10 CMA Natural Gas Engine
1 of 4
Used Ajax 7 1/2x10 CMA Natural Gas Engine

Used Ajax 7 1/2x10 CMA Pumpjack Engine with following features: • 30HP • 300-525 RPM • 1 Cylinder, 4 stroke • 190.5 mm (7.5 in) Bore • 254 mm (10.0 in) Stroke • 7.2 L (442 in3) Displacement • Weight • Dims 94"Lx57"Wx46"H

Used Ajax 7 1/2x10 CMA Natural Gas Engine
1 of 4
  • 30 HP
  • 300-525 RPM
  • Stock No: 59061
30
300-525
Used Ajax 8 1/2x10 E-42 Natural Gas Engine
1 of 5
Used Ajax 8 1/2x10 E-42 Natural Gas Engine

Used Ajax 8 1/2x10 E-42 Pumpjack Engine with following features: • 42 HP • 300-525 RPM • 1 Cylinder, 4 stroke • 216 mm (8.5 in) Bore • 254 mm (10 in) Stroke • 9.29 L (567 in3) Displacement • Weight 4,320 lbs (dry weight, engine only) • Dims 88"L x 60"W x 58"H

Used Ajax 8 1/2x10 E-42 Natural Gas Engine
1 of 5
  • 42 HP
  • 300-525 RPM
  • Stock No: 59059
42
300-525
Used Ajax 8 1/2x10 E-42 Natural Gas Engine
1 of 4
Used Ajax 8 1/2x10 E-42 Natural Gas Engine

Used Ajax 8 1/2x10 E-42 Pumpjack Engine with following features: • 42 HP • 300-525 RPM • 1 Cylinder, 4 stroke • 216 mm (8.5 in) Bore • 254 mm (10 in) Stroke • 9.29 L (567 in3) Displacement • Weight 4,320 lbs (dry weight, engine only) • Dims 88"L x 60"W x 58"H

Used Ajax 8 1/2x10 E-42 Natural Gas Engine
1 of 4
  • 42 HP
  • 300-525 RPM
  • Stock No: 59058
42
300-525
Used Ajax 8 1/2x10 E-42 Natural Gas Engine
1 of 3
Used Ajax 8 1/2x10 E-42 Natural Gas Engine

Used Ajax 8 1/2x10 E-42 Pumpjack Engine with following features: • 42 HP • 300-525 RPM • 1 Cylinder, 4 stroke • 216 mm (8.5 in) Bore • 254 mm (10 in) Stroke • 9.29 L (567 in3) Displacement • Weight 4,320 lbs (dry weight, engine only) • Dims 88"L x 60"W x 58"H

Used Ajax 8 1/2x10 E-42 Natural Gas Engine
1 of 3
  • 42 HP
  • 300-525 RPM
  • Stock No: 59057
42
300-525
Used Ajax 8 1/2x10 E-42 Natural Gas Engine
1 of 4
Used Ajax 8 1/2x10 E-42 Natural Gas Engine

Used Ajax 8 1/2x10 E-42 Pumpjack Engine with following features: • 42 HP • 300-525 RPM • 1 Cylinder, 4 stroke • 216 mm (8.5 in) Bore • 254 mm (10 in) Stroke • 9.29 L (567 in3) Displacement • Weight 4,320 lbs (dry weight, engine only) • Dims 88"L x 60"W x 58"H

Used Ajax 8 1/2x10 E-42 Natural Gas Engine
1 of 4
  • 42 HP
  • 300-525 RPM
  • Stock No: 59056
42
300-525
Used Ajax 8 1/2x10 E-42 Natural Gas Engine
1 of 5
Used Ajax 8 1/2x10 E-42 Natural Gas Engine

Used Ajax 8 1/2x10 E-42 Pumpjack Engine with following features: • 42 HP • 300-525 RPM • 1 Cylinder, 4 stroke • 216 mm (8.5 in) Bore • 254 mm (10 in) Stroke • 9.29 L (567 in3) Displacement • Weight 4,320 lbs (dry weight, engine only) • Dims 88"L x 60"W x 58"H

Used Ajax 8 1/2x10 E-42 Natural Gas Engine
1 of 5
  • 42 HP
  • 300-525 RPM
  • Stock No: 59055
42
300-525
Used Ajax 8 1/2x10 E-42 Natural Gas Engine
1 of 5
Used Ajax 8 1/2x10 E-42 Natural Gas Engine

Used Ajax 8 1/2x10 E-42 Pumpjack Engine with following features: • 42 HP • 300-525 RPM • 1 Cylinder, 4 stroke • 216 mm (8.5 in) Bore • 254 mm (10 in) Stroke • 9.29 L (567 in3) Displacement • Weight 4,320 lbs (dry weight, engine only) • Dims 88"L x 60"W x 58"H

Used Ajax 8 1/2x10 E-42 Natural Gas Engine
1 of 5
  • 42 HP
  • 300-525 RPM
  • Stock No: 59054
42
300-525
Rebuilt Ajax DP-80 Natural Gas Engine
1 of 8
Rebuilt Ajax DP-80 Natural Gas Engine

Rebuilt Ajax DP-80 Pumpjack cylinder with following features: • 80 HP • 250/400 RPM • 1 Cylinder • 279.4 mm (11.0 in) Bore • 355.6 mm (14.0 in) Stroke • 21.79 L (1330 in3) Displacement • Weight • Dims

Rebuilt Ajax DP-80 Natural Gas Engine
1 of 8
  • 80 HP
  • 250-400 RPM
  • Stock No: 56477
80
250-400
Rebuilt Ajax DP-80 Natural Gas Engine
1 of 6
Rebuilt Ajax DP-80 Natural Gas Engine

Rebuilt Ajax DP-80 Pumpjack cylinder with following features: • 80 HP • 250/400 RPM • 1 Cylinder • 279.4 mm (11.0 in) Bore • 355.6 mm (14.0 in) Stroke • 21.79 L (1330 in3) Displacement • Weight • Dims

Rebuilt Ajax DP-80 Natural Gas Engine
1 of 6
  • 80 HP
  • 250-400 RPM
  • Stock No: 56476
80
250-400
Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 4
Used Ajax 7 1/4x8 EA-30 Natural Gas Engine

Used Ajax 7 1/4x8 EA-30 Pumpjack Engine with following features: • 30 HP • 350-650 RPM • 1 Cylinder, 4 stroke • 184 mm (7.25 in) Bore • 203 mm (10 in) Stroke • 5.41 L (330 in3) Displacement • Weight 2,950 (dry weight, engine only) • Dims 72"Lx46"Wx36"H

Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 4
  • 30 HP
  • 350-650 RPM
  • Stock No: 56343
30
350-650

Power Zone offers a wide range of new, used and reconditioned engines including Diesel Engines, Natural Gas Engines, Gas Engines, Propane Engines, and Hit & Miss Engines, sometimes referred to as Putt & Putt Engines or Pumpjack Engines. We provide these engines from many different manufacturers including Caterpillar, MTU, Detroit, Cummins, John Deere Ajax and Arrow. We have engines for most applications including Portable Power Units, Heavy Machinery, Fluid Pumping, Air Compression and Backup Power for the municipal, manufacturing, oil & gas, mining and agriculture sectors.