Pressure Washer Pump 4000PSI 4GPM 1" Horizontal Shaft Fits replaces for RKV4G37
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About this product
This is an aftermarket triplex plunger pump designed for cold water pressure washers, capable of delivering a maximum discharge pressure of 4,000 PSI and a flow rate of 4.0 GPM. It features a 1-inch hollow horizontal shaft and is rated for a maximum pump speed of 3,400 RPM. The pump has an oil capacity of 16oz and can handle fluid temperatures up to 165 degrees Fahrenheit, making it suitable for gas-powered systems that require robust performance.
Our take
If you're looking to replace a worn-out pump on your gas-powered pressure washer, this BFO unit offers solid specs. The 4,000 PSI and 4 GPM output are impressive, suitable for heavy-duty cleaning tasks. The triplex plunger design is generally reliable, and the 1-inch horizontal shaft is a common fit for many engines. Just be aware that this is an aftermarket part, so ensure compatibility with your specific pressure washer model, especially if it’s a non-standard setup. The maximum fluid temperature rating is a nice bonus for those tougher jobs.
Pros & Cons
Pros
- 4,000 PSI for heavy-duty cleaning
- 4.0 GPM high flow rate
- Triplex plunger pump type
- Compatible with gas power sources
- Handles up to 165°F fluid temperature
Cons
- Aftermarket replacement part
- Requires 1-inch horizontal shaft
Specifications
- Brand BFO
- Country of Origin China
- Fit for: RSV4G40
- Flow Rate 4.0 GPM
- Max. Discharge Pressure 4,000 PSI
- Max. Fluid Temp. 165 Degrees
Show all 20 specifications
- Max. Horsepower Requirements
- 13.75GPH
- Max. Pressure
- 4000 psi
- Max. Pump Speed
- 3,400 RPM
- Model
- Pressure Washer
- MPN
- ZEYOQ9
- Notice
- This is aftermarket replcement part., California Prop 65 Warning.
- Oil Capacity
- 16oz
- Power Source
- Gas
- Pump Design
- Horizontal
- Pump Type
- Triplex Plunger
- Replace part number
- RSV4G40, RSV4G40HDF40EZ
- Shaft Diameter
- 1” Hollow
- Type
- Cold Water Pressure Washer
- UPC
- 6931823940720
