EZ4040G Triplex Pressure Washer Pump – 4.0 GPM @ 4000 PSI, 3400 RPM, 1″ Hollow Shaft

Part Number: EZ4040G
Category: Pressure Washer Pumps
Type: Direct-Drive Triplex Pump – EZ4040G, 4.0 GPM @ 4000 PSI (3400 RPM, 1″ Hollow Shaft)

The EZ4040G Triplex Pressure Washer Pump is a high-output, commercial-grade direct-drive pump built for gas-powered pressure washers that demand both maximum pressure and high flow in a compact footprint. Delivering 4.0 GPM at up to 4000 PSI and operating at 3400 RPM, this pump provides exceptional cleaning speed and cutting power for heavy residential and light commercial applications.

Product Specifications

• Pump Model: EZ4040G

• Pump Type: Triplex Plunger, Direct Drive

• Flow Rate: 4.0 GPM

• Max Pressure: 4000 PSI

• Rated Speed: 3400 RPM

• Shaft Size: 1″ Hollow

• Bore Diameter: 13 mm

• Stroke: 13 mm

• Weight: 20 lb

• Condition: New

Features & Benefits

• High-flow, high-pressure output for faster, more aggressive cleaning

• Triplex plunger design for smooth, low-pulsation performance

• 1″ hollow shaft for wide gas engine compatibility

• Compact direct-drive layout for simple, drop-in replacement

• Longer service life than axial-style pumps

• Ideal for heavy residential and light commercial use

Applications

• Gas-powered direct-drive pressure washers

• Contractor-grade and high-performance residential systems

• OEM replacement for EZ-series pumps

• Equipment upgrades and refurbishments

Important Notes

• Confirm shaft size (1″ hollow), operating speed (3400 RPM), and engine compatibility before ordering

• Designed specifically for direct-drive configurations

• Final PSI and GPM output depend on engine horsepower and overall system setup