5PP3140 Pressure Washer Pump – 4.0 GPM @ 4000 PSI, 1460 RPM, 20 mm Solid Shaft

Part Number: 5PP3140
Category: Pressure Washer Pumps
Type: Belt-Drive Triplex Pump – CAT 5PP3140, 4.0 GPM @ 4000 PSI

The CAT 5PP3140 Pressure Washer Pump is a commercial-grade triplex plunger pump engineered for smooth, low-RPM belt-drive systems. Delivering 4.0 GPM at up to 4000 PSI and designed to operate around 1460–1645 RPM, this pump provides an ideal balance of high pressure, consistent flow, and extended service life. Built with a rugged 20 mm solid shaft and CAT Pumps’ proven industrial construction, the 5PP3140 is a dependable solution for professional and light-industrial pressure washer builds where durability and performance are critical.

Product Specifications

• Pump Model: 5PP3140

• Manufacturer: CAT Pumps

• Pump Type: Triplex Plunger, Belt Drive

• Flow Rate: 4.0–4.5 GPM

• Max Pressure: 4000 PSI

• Maximum Pump Speed: 1645 RPM

• Typical Operating Speed: 1460 RPM

• Shaft Size: 20 mm Solid (0.787″)

• Bore: 16 mm (0.630″)

• Maximum Inlet Pressure: 60 PSI

• Crankcase Oil Capacity: 17 oz

• Maximum Fluid Temperature: 160°F

• Discharge Ports: Dual 3/8″ FPT

• Weight: 20 lb

• Condition: New

Features & Benefits

• Genuine CAT Pumps commercial-grade construction

• Low-RPM belt-drive design for extended pump life

• High-pressure 4000 PSI capability for tough cleaning tasks

• Triplex plunger design for smooth, low-pulsation output

• Heavy-duty 20 mm solid shaft for reliable power transfer

• Ideal for professional and light-industrial systems

Applications

• Belt-driven commercial pressure washers

• Professional cleaning equipment

• Fleet wash and surface cleaning systems

• Custom pressure washer builds and upgrades

Important Notes

• Verify shaft size (20 mm) and drive configuration before ordering

• Designed for belt-driven systems operating in the 1460–1645 RPM range

• Final operating PSI and GPM depend on pulley ratio, motor, and overall system configuration