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Canpump CT 4066 GB: 4000 psi @ 6.61 US gpm, 1-in Shaft Pressure Washer Pump


$800.00 - $900.00
$800.00 - $900.00


The CT 4066 GB is one of our premium 22 mm plunger pumps. Physically larger than our 15 mm & 18mm plunger pumps of similar pressure, these are our direct-drive gas pumps with the highest flow rate, suited for the most demanding high flow applications.

Detachable unloader valves make replacements and upgrades a cinch. Choose from either the standard unloader valve or a premium extended bypass unloader kit, which allows water to stay cooler for longer and increases the amount of time you can run a pressure washer in bypass mode without spraying.

  • Model: CT 4066 GB (formerly model # 3WZ-22146GA)
  • Pressure: 4000 psi (275 bar)
  • Flow rate: 6.61 US gpm (25.0 L/min)
  • Power: 22 hp
  • RPM: Gearbox Reduction 3400–1560
  • Pump mechanism: Triplex plunger
  • Inlet: ¾ standard garden hose
  • Outlet: Quick-connect
  • Includes: Detergent tube with strainer and operating manual with spare parts list
  • Oil grade: SAE 15W-40 oil
  • Compatibility: Standard SAE J609 mounting flange for up to 22 hp direct-drive gasoline engines with 1″ horizontal shafts. The pump can run on a 13 hp engine when turned down to 2450 psi.
  • Standard unloader valve: Detachable (bolt-on) unloader valve; pressure-adjustable with 20:1 detergent injector and built-in water filter
  • Premium unloader kit: Detachable (bolt-on) Italian-made unloader valve by PA SpA with extended bypass; pressure-adjustable with built-in water filter (no detergent injector)
Additional Information

Operating & Parts List Manual

Replacement Pump Buying Guide

Canpump Pumps - Manufacturing Process & Features

Extra Information

CT 4066 GB
4,000 psi (275 bar)
Flow rate:
6.61 US gpm (25.0 L/min)
22 hp
Gearbox reduction