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70 Results
70 Results 
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Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 2
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 2
  • 30 HP
  • 350-650 RPM
  • Stock No: 53826
30
350-650
Used Ajax 7 1/2x10 CMA Natural Gas Engine
1 of 3
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 3
  • 30 HP
  • 300-525 RPM
  • Stock No: 53731
30
300-525
Used Ajax 7 1/2x10 CMA Natural Gas Engine
1 of 3
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

Used Ajax 7 1/2x10 CMA Natural Gas Engine
1 of 3
  • 30 HP
  • 300-525 RPM
  • Stock No: 53732
30
300-525
Used Lufkin L-333 Natural Gas Engine
1 of 2
Used Lufkin L-333 Natural Gas Engine

Used Lufkin L-333 Pumpjack engine with following features: • 30 HP • 350-750 RPM • 2 Cylinder, 2 cycle • 127.0 mm (5.5 in) Bore • 158.75 mm (7 in) Stroke • 5.4 L (123 in3) Displacement • Naturally Aspirated • CCW Rotation (from flywheel end) • Weight (dry weight, engine only) • Dims

Used Lufkin L-333 Natural Gas Engine
1 of 2
  • 30 HP
  • 350/750 RPM
  • Stock No: 53462
30
350/750
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

Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 3
  • 30 HP
  • 350-650 RPM
  • Stock No: 53218
30
350-650
Used Lufkin L-333 Natural Gas Engine
1 of 3
Used Lufkin L-333 Natural Gas Engine

Used Lufkin L-333 Pumpjack engine with following features: • 30 HP • 350-750 RPM • 2 Cylinder, 2 cycle • 127.0 mm (5.5 in) Bore • 158.75 mm (7 in) Stroke • 5.4 L (123 in3) Displacement • Naturally Aspirated • CCW Rotation (from flywheel end) • Weight • Dims

Used Lufkin L-333 Natural Gas Engine
1 of 3
  • 30 HP
  • 750 RPM
  • Stock No: 53193
30
750
Used Ajax 7 1/2x10 CMA Natural Gas Engine
1 of 12
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

Used Ajax 7 1/2x10 CMA Natural Gas Engine
1 of 12
  • 30 HP
  • 300-525 RPM
  • Stock No: 53150
30
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"Wx55"H

Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 4
  • 30 HP
  • 350-650 RPM
  • Stock No: 53147
30
350-650
Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 5
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

Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 5
  • 30 HP
  • 350-650 RPM
  • Stock No: 52969
30
350-650
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

Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 4
  • 30 HP
  • 350-650 RPM
  • Stock No: 52972
30
350-650
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"Wx55"H

Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 4
  • 30 HP
  • 350-650 RPM
  • Stock No: 52831
30
350-650
Used Ajax 7 1/2x10 CMA Natural Gas Engine
1 of 3
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

Used Ajax 7 1/2x10 CMA Natural Gas Engine
1 of 3
  • 30 HP
  • 300-525 RPM
  • Stock No: 52818
30
300-525
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: 52817
30
350-650
Used Arrow Y-33 Natural Gas Engine
1 of 3
Used Arrow Y-33 Natural Gas Engine

Used Arrow Y-18 Pumpjack engine with following features: • 33 HP • 400/800 RPM • 1 Cylinder, 4 stroke • 5.5 L (332 in3) Displacement • Naturally Aspirated • Weight 2,890 lbs (dry weight, engine only) • Dims 65"Lx37"Wx58"H

Used Arrow Y-33 Natural Gas Engine
1 of 3
  • 33 HP
  • 400-800 RPM
  • Stock No: 52805
33
400-800
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"Wx55"H

Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 4
  • 30 HP
  • 350-650 RPM
  • Stock No: 52747
30
350-650
Used Lufkin L-333 Natural Gas Engine
1 of 3
Used Lufkin L-333 Natural Gas Engine

Used Lufkin L-333 Pumpjack engine with following features: • 30 HP • 350-750 RPM • 2 Cylinder, 2 cycle • 127.0 mm (5.5 in) Bore • 158.75 mm (7 in) Stroke • 5.4 L (123 in3) Displacement • Naturally Aspirated • CCW Rotation (from flywheel end) • Weight (dry weight, engine only) • Dims

Used Lufkin L-333 Natural Gas Engine
1 of 3
  • 30 HP
  • 350/750 RPM
  • Stock No: 52749
30
350/750
Used Ajax 7 1/2x10 Natural Gas Engine
1 of 4
Used Ajax 7 1/2x10 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 90"Lx59"Wx60"H

Used Ajax 7 1/2x10 Natural Gas Engine
1 of 4
  • 30 HP
  • 300-525 RPM
  • Stock No: 52716
30
300-525
Used Superior 7 1/2x10 Natural Gas Engine
1 of 2
Used Superior 7 1/2x10 Natural Gas Engine

Used Superior 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

Used Superior 7 1/2x10 Natural Gas Engine
1 of 2
  • 30 HP
  • 300-525 RPM
  • Stock No: 52718
30
300-525
Used Superior 7 1/2x10 Natural Gas Engine
1 of 2
Used Superior 7 1/2x10 Natural Gas Engine

Used Superior 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 Superior 7 1/2x10 Natural Gas Engine
1 of 2
  • 30 HP
  • 300-525 RPM
  • Stock No: 52715
30
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: 52648
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.