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180 Results
180 Results 
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Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 7
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 7
  • 30 HP
  • 350-650 RPM
  • Stock No: 54493
Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 6
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 6
  • 30 HP
  • 350-650 RPM
  • Stock No: 54494
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: 54495
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: 54498
Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 6
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 6
  • 30 HP
  • 350-650 RPM
  • Stock No: 54499
Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 7
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 7
  • 30 HP
  • 350-650 RPM
  • Stock No: 54501
Used Ajax 8 1/2x10 E-42 Natural Gas Engine
1 of 7
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

Used Ajax 8 1/2x10 E-42 Natural Gas Engine
1 of 7
  • 42 HP
  • 300-525 RPM
  • Stock No: 54405
Used Ajax 6 1/2x8 EA-22 Natural Gas Engine
1 of 2
Used Ajax 6 1/2x8 EA-22 Natural Gas Engine

Used Ajax 6 1/2x8 EA-22 Pumpjack Engine cylinder 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 • Dims

Used Ajax 6 1/2x8 EA-22 Natural Gas Engine
1 of 2
  • 22 HP
  • 350-650 RPM
  • Stock No: 54190
Used Ajax 7 1/2x10 CMA Natural Gas Engine
1 of 2
Used Ajax 7 1/2x10 CMA Natural Gas Engine

Used Ajax 7 1/2x10 CMA Pumpjack Engine cylinder 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 2
  • 30 HP
  • 300-525 RPM
  • Stock No: 54186
Used Ajax 7 1/2x10 CMA Natural Gas Engine
1 of 2
Used Ajax 7 1/2x10 CMA Natural Gas Engine

Used Ajax 7 1/2x10 CMA Pumpjack Engine cylinder 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 2
  • 30 HP
  • 300-525 RPM
  • Stock No: 54192
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 cylinder 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 • Dims

Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 2
  • 30 HP
  • 350-650 RPM
  • Stock No: 54193
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 cylinder 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 • Dims

Used Ajax 7 1/4x8 EA-30 Natural Gas Engine
1 of 2
  • 30 HP
  • 350-650 RPM
  • Stock No: 54194
Used Ajax DP-115 Natural Gas Engine
1 of 7
Used Ajax DP-115 Natural Gas Engine

13 1/4" x 16" cylinder for a DP-115

Used Ajax DP-115 Natural Gas Engine
1 of 7
  • 115 HP
  • 200-360 RPM
  • Stock No: 54191
Used Ajax DP-115 Natural Gas Engine
1 of 9
Used Ajax DP-115 Natural Gas Engine

13 1/4'' x 16'' cylinder for a DP-115

Used Ajax DP-115 Natural Gas Engine
1 of 9
  • 115 HP
  • 200-360 RPM
  • Stock No: 54185
Used Ajax DP-165 Natural Gas Engine
1 of 2
Used Ajax DP-165 Natural Gas Engine

15" x 16" cylinder for a DP-165, cylinder is a K-7201E

Used Ajax DP-165 Natural Gas Engine
1 of 2
  • 165 HP
  • Stock No: 54189
Used Ajax DP-60 Natural Gas Engine Bare Case
1 of 6
Used Ajax DP-60 Natural Gas Engine Bare Case

Ajax Bare Case

Used Ajax DP-60 Natural Gas Engine Bare Case
1 of 6
  • 60 HP
  • 200-475 RPM
  • Stock No: 54170
Used Ajax DP-115 Natural Gas Engine
1 of 3
Used Ajax DP-115 Natural Gas Engine

Used Ajax DP-115 Pumpjack engine with following features: • 115 HP • 200/360 RPM • 1 Cylinder • 336.55 mm (13.25 in) Bore • 406.4 mm (16.0 in) Stroke • 36.14 L (2206 in3) Displacement • Naturally Aspirated • Weight • Dims

Used Ajax DP-115 Natural Gas Engine
1 of 3
  • 115 HP
  • 200-360 RPM
  • Stock No: 54145
Used Ajax DP-300 Cylinder Natural Gas Engine
1 of 3
Used Ajax DP-300 Cylinder Natural Gas Engine

15 x 16 cylinder core

Used Ajax DP-300 Cylinder Natural Gas Engine
1 of 3
  • 300 HP
  • Stock No: 54082
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

Used Ajax 8 1/2x10 E-42 Natural Gas Engine
1 of 3
  • 42 HP
  • 300-525 RPM
  • Stock No: 54075
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

Used Ajax WL/EA-15 Natural Gas Engine
1 of 4
  • 15 HP
  • 350-650 RPM
  • Stock No: 54052