Pressure Washer Pump GP HD Belt Drive 4 GPM 4000 PSI- HP4040 PLUMB
Free shipping · built to order — call for the current lead time
Low Price Guaranteed
Found it cheaper somewhere else? We'll match it. Call 800-493-7692 and we'll beat the deal.
Overview
The HP4040PLUMB is a fully plumbed General Pump HP4040 belt-drive triplex pump rated 4 GPM at 4000 PSI (or 4.75 GPM at 3500 PSI when run at 1750 RPM). It comes ready to install: the unloader/regulator (VRT3-310EZ), garden-hose water inlet fitting with filter, easy-start valve, thermo valve, and crankcase oil are already mounted — bolt the pump on, set your pressure, and go. Built for continuous-duty commercial use, it runs a forged brass manifold with a lifetime warranty, solid ceramic plungers, tapered roller bearings, and a large anodized-aluminum oil-bath crankcase on a 24 mm solid shaft. A solid drop-in for belt-drive pressure washer builds and pump replacements.
What's included
- Fully plumbed — includes VRT3-310EZ unloader/regulator, easy-start valve, thermo valve, and oil
- Garden hose inlet fitting with filter
- Extended bypass hose minimizes heat buildup in bypass
- Heavy-duty continuous-use belt drive, 1450/1750 RPM
- Forged brass manifold with lifetime warranty
- Solid ceramic plungers with lubricated packings
- Large-capacity anodized aluminum oil-bath crankcase with easy-view oil sight gauge
- Heavy-duty tapered roller bearings and oversized connecting rods
Specifications
- Pump
- General Pump HP4040
- Type
- Belt drive, continuous duty
- Flow
- 4.0 GPM @ 1450 RPM / 4.75 GPM @ 1750 RPM
- Max Discharge Pressure
- 4000 PSI
- Unloader
- VRT3-310EZ
- Max Pump Speed
- 1750 RPM
- Max Inlet Pressure
- 125 PSI
- Max Inlet Vacuum
- 9 ft. water (7.9 in. Hg)
- Max Fluid Temperature
- 165°F
- Plunger Bore
- 0.787 in. / 20 mm
- Plunger Stroke
- 0.472 in. / 12 mm
- Shaft Diameter
- 0.945 in. / 24 mm
- Inlet Port Thread
- 1/2-14 BSPP-F
- Discharge Port Thread
- 3/8-19 BSPP-F
- Crankcase Oil Capacity
- 40.6 oz.
- Weight
- 32 lbs.
- Dimensions
- 12.2 in. x 9.2 in. x 6.9 in.
Frequently asked questions
Talk to a real expert
Our equipment experts
150+ years combined on the equipment
Talk to someone who actually knows the machine
Skip the chatbot maze. Call and you get a specialist who can size the right unit, match the exact part, and match the right sealer. Usually faster than figuring it out yourself.




