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WARNING: This product might contain a chemical known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to

Specification US Metric
Flow106 GPM400 L/min
Maximum Discharge Pressure2000 PSI140 bar
Crankshaft Speed580 RPM
Power142 HP106 KW
Max Temperature86 °F30 °C
Inlet Port Size(2) 3"BSP
Discharge Port Size(2) 1-1/4" BSP
Plunger Diameter2.55 in.65 mm
Stroke2.83 in.72 mm
Maximum Inlet Pressure29 PSI2.0 bar
Crankshaft Diameter2.76 in.70 mm
Crankshaft RotationTop of Pulley Towards Manifold
Key Width0.55 in.14 mm
Crankshaft MountingEither Side
Crankcase Oil Capacity US3.3 gal 12.5 L
Weight778 lbs.353 kg
Manifold Material AISI 316 Stainless Steel
The repair kits listed to the right are available for this pump. If you need further information about these repair kits, or have questions about other specific parts for your pump, please contact you local Giant distributor or contact Giant customer service.
Plunger Packing Kit – Part #09586-0100
37A 05619 O-Ring 3
38A 06667-0001 O-Ring 6
39A 05066 O-Ring 3
40 03633 Grooved Seal 3
42 06997 V-Sleeve 9
Inlet Valve Kit – Part #09587-0100
51 05076-0100 Inlet Valve Assembly 3
56A 05613 O-Ring 3
Discharge Valve Kit – Part #09588-0100
52 05082-0100 Discharge Valve Assembly 3
56A 05613 O-Ring 3
Oil Seal Kit – Part #09584A
32 05058 Radial Shaft Seal 30
32A 03118 Scraper 3
33A 05056 O-Ring 3

Horsepower Specifications

RPM GPM 500 PSI 750 PSI 1000 PSI 2000 PSI
300 54.7 18.9 28.3 37.7 75.5
400 72.9 25.1 37.7 50.3 100.6
500 91.1 31.4 47.1 62.8 125.7
580 106.0 36.6 54.8 73.1 146.2

Images Open in new Window/Tab

  • Dimensional Drawing (Side) Open
  • Dimensional Drawing (Front) Open
  • GP8065-5100 Exploded View
  • GP8065-5100 Parts List


Documents open in new window/tab.

  • Giant Industries Limited Warranty
  • GP8065-5100 Installation Instructions
  • GP8065-5100 Repair Instructions
  • Troubleshooting Guide

Sample Pump

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For 50 years, Giant Pumps has offered the most dependable positive displacement high-pressure triplex pumps available. Designed and built to the highest quality standards, customers count on Giant Pumps products to keep their equipment running. Every design detail of Giant Pumps products is optimized for long-life and reliable performance, making Giant Pumps the most trusted name in high-pressure pumps and systems.

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