Centurion 4 GPM 4000 PSI Direct-Drive Pressure Washer Pump – 1″ Shaft

Premium Centurion 4 GPM 4000 PSI Pressure Washer Pump

Built for professionals who expect dependable pressure and long service life, this premium Centurion direct-drive pump delivers 4.0 GPM at up to 4,000 PSI. Its 1-inch hollow shaft and standard gas-engine flange make it an excellent replacement pump or foundation for a commercial pressure washer build.

Part of the premium Centurion lineup, this Italian-made triplex pump combines a corrosion-resistant nickel-plated manifold, solid ceramic plungers and a heavy-duty crankcase for reliable performance in demanding cleaning applications.

Key Features

• Professional output: 4.0 GPM maximum flow and 4,000 PSI maximum pressure
• Direct-drive design: 1-inch hollow shaft for compatible horizontal-shaft gas engines
• Operating speed: 3,400 RPM
• Engine compatibility: Designed for engines rated up to 14.5 HP
• Premium manifold: Nickel-plated head for enhanced corrosion resistance
• Triplex construction: Solid ceramic plungers for durability and consistent pressure
• Connections: 1/2-inch inlet and 3/8-inch outlet
• Premium Centurion quality: Manufactured in Italy

Commercial Pressure Washer Performance

The Centurion 4 GPM pump is designed for commercial pressure washing, equipment cleaning, property maintenance, fleet washing and other applications that demand concentrated 4,000 PSI cleaning power. The direct-drive configuration creates a compact installation and transfers engine power efficiently without a separate belt-drive system.

Compatibility

This pump is intended for compatible gas-powered pressure washers using a 1-inch horizontal engine shaft. Before ordering, verify your engine shaft diameter, mounting-flange pattern, rotation, inlet and outlet orientation, engine horsepower and available installation clearance. Matching GPM and PSI alone does not guarantee fitment.

Specifications

Need help confirming fitment? Contact Rockhold Ranch Equipment with your pressure washer model, engine model and current pump information before ordering.