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CAT Pumps 5CP4120CSS Plunger Pump - 4.5 GPM, 4000 PSI

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20.28 lbs
Usually Ships in 2 Weeks
Now Only!
Standard triplex design pump. Connection ports include a 1/4" FNPT inlet port and a 3/8" FNPT outlet. 4000 PSI maximum pressure, 4.5 GPM, and 1750 RPM.

Technical Specifications

Max PSI: 4000
Max GPM: 4.5
Inlet Port: 1/2 inch
Outlet Port: 3/8 inch
Crankcase Capacity: 17 ounce
RPM: 1750
Max Temperature: 160 degrees F
Bore: 15 millimeter
Shaft Diameter: 20 millimeter
Stroke: 20 millimeter

Product Description

5CP Plunger Pump

The CAT Pump 5CP4120CSS is one of their 5CP (5 frame) plunger pumps. They're an excellent choice for high-pressure liquid transfer in applications like car washes! This pump has a standard triplex plunger design with press-in seal cases for easy maintenance. Features direct drive mounting with a bell housing or flexible coupling. Perfectly suited to do the job at your wash facility!

Dimensions: 10.63" x 8.90" x 5.75"


  • Standard industrial triplex design
  • Direct drive mount to motor with bell housing and flexible coupling or gas engine
  • Press-in seal cases for simple maintenance
  • Side and rear oil gauge for easy maintenance


  •  4000 PSI maximum pressure
  • 4.5 GPM maximum flow rate
  • .787" stroke
  • 1750 RPM maxmimum speed
  • -2.5 to 60 PSI inlet pressure range
  • 160° Fahrenheit maximum temperature
  • .590" bore
  • 17 oz. crankcase oil capacity
  • 1/2" FNPT inlet
  • 3/8" FNPT outlet port

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