CAT Pumps 66DX40GP Pressure Washer Pump Package – 66DX40GG1-VRT3-310EZ w/ Bypass & Thermal Relief – 4.0 GPM @ 4000 PSI

Part Number: 66DX40GP Package (66DX40GG1-VRT3-310EZ)
Category: Pressure Washer Pumps → Pump Packages → Fully Plumbed Pump Assemblies
Type: CAT Pumps 66DX40GP Pressure Washer Pump Package

The CAT Pumps 66DX40GP Pressure Washer Pump Package is a professional-grade, ready-to-install pressure washer pump assembly built around the trusted CAT Pumps 66DX40GG1 triplex plunger pump. Designed for contractors, fleet washing operations, agricultural maintenance, industrial cleaning systems, and commercial pressure washer manufacturers, this package combines CAT Pumps' renowned durability with integrated pressure regulation and thermal protection.

Key Features & Benefits

• Genuine CAT Pumps 66DX40GP Pressure Washer Pump Package
• Built around the CAT Pumps 66DX40GG1 triplex pump
• Produces up to 4.0 GPM
• Rated for 4000 PSI
• Includes VRT3-310EZ pressure regulating bypass unloader
• Includes thermal relief valve
• Industrial-duty triplex plunger design
• Smooth pressure delivery with reduced pulsation
• Commercial-grade durability
• Ready-to-install pump package
• Simplifies installation and replacement
• Designed for demanding commercial applications

Package Components

Included Pump

CAT Pumps 66DX40GG1 Triplex Plunger Pump

• Triplex plunger construction
• Commercial-duty design
• Smooth pressure output
• Low pulsation operation
• Long service life

Included Unloader

VRT3-310EZ Pressure Regulating Bypass Unloader

• Adjustable pressure regulation
• Integrated bypass operation
• Helps protect pump components
• Designed for professional pressure washer systems

Included Protection Component

Thermal Relief Valve

• Helps prevent excessive heat buildup
• Protects seals and internal pump components
• Improves system longevity and reliability

Technical Specifications

Manufacturer: CAT Pumps

Package Model: 66DX40GP

Pump Model: 66DX40GG1

Unloader Model: VRT3-310EZ

Pump Type: Triplex Plunger Pump

Maximum Flow Rate: 4.0 GPM

Maximum Pressure: 4000 PSI

Drive Type: Direct Drive Gas

Included Unloader: Yes

Included Thermal Relief Valve: Yes

Application: Commercial & Industrial Pressure Washing

Typical Applications

• Commercial pressure washer systems
• Fleet washing operations
• Heavy equipment cleaning
• Agricultural equipment maintenance
• Construction equipment washing
• Property maintenance contractors
• Industrial cleaning systems
• Pressure washing trailers
• Custom pressure washer skids
• Municipal maintenance operations
• Equipment rental fleets

Performance Advantages

• Delivers 4.0 GPM at 4000 PSI for powerful professional cleaning performance
• Complete package reduces installation complexity and setup time
• CAT Pumps triplex design provides exceptionally smooth operation and low pulsation
• Built for commercial and industrial pressure washing environments
• Included VRT3-310EZ unloader provides precise pressure regulation and bypass protection
• Thermal relief valve helps prevent overheating during extended bypass operation
• Reliable triplex plunger construction supports long service intervals
• Excellent balance of pressure, flow, and durability
• Ideal for contractors, fleet washers, and industrial cleaning professionals
• Built with CAT Pumps' industry-leading engineering for maximum reliability and long-term performance