Hourleey 7/8ft Shaft Vertical Pressure Washer Pump - 3400 PSI

In this review the Hourleey 7/8' Shaft Vertical Pressure Washer Pump is evaluated as a direct replacement option for gas-powered pressure washers that need up to 3400 PSI at 2.5 GPM. The bottom line: it is best for DIYers or small contractors who want a straightforward swap to restore cleaning power without buying a new machine, because the kit's universal 7/8' shaft fit and ready-to-run, prefilled design make installation fast and practical.

Key Features

• 3400 PSI at 2.5 GPM: Delivers sufficient pressure and flow for common outdoor cleaning tasks like sidewalks, fences, and vehicle washing.
• Universal 7/8' shaft: Fits many gas-powered washers so it can replace older vertical pumps without extensive modification.
• Included hardware and hoses: The kit ships with a detergent hose, bolts, shaft key and washers to simplify installation and get the unit running quickly.
• Maintenance-free crankcase: Arrives prefilled with oil and uses a double seal system to reduce the need for initial oil filling and lower leak risk.
• Thermal relief valve: Protects the pump during bypass operation to reduce overheating and extend component life.
• Robust construction: One-piece pump head and metal shaft sleeve help improve sealing and plunger durability for longer service life.

Who It's For

This pump is aimed at owners of gas pressure washers from brands like Simpson, Ryobi, Honda and others who need a direct replacement rather than a full machine upgrade. It works well when the engine and other components are in good shape and only the pump needs renewal.

It is less appropriate for users who require pressures or flows outside the stated 3400 PSI / 2.5 GPM range, or for those who need exact OEM fitment for a rare model that does not use a 7/8' shaft or the standard hose threads supplied.

Pros & Cons

Pros

• Easy to install with included bolts, shaft key and detergent hose for quick replacement.
• Prefilled and sealed design reduces setup time and minimizes the chance of oil leaks.
• Good value versus replacing an entire pressure washer when only the pump has failed.
• Compatible inlet and outlet fittings make it usable with common garden hose and high-pressure hose standards.

Cons

• Some buyers report mixed fit and pressure performance on certain models, so verify compatibility before ordering.
• Not ideal if the machine requires a different shaft size or nonstandard connections.

Specifications

Rated Pressure	3400 PSI
Flow Rate	2.5 GPM
Shaft Size	7/8' standard vertical shaft
Water Inlet	3/4' NH garden hose
High-Pressure Outlet	Threaded M22
Included Parts	Detergent hose, 3 bolts (M8 x 40), shaft key, flat pads, spring washers, manual
Pre-filled	Yes, oil prefilled with double seal system

Our Verdict

The Hourleey 7/8' Shaft Vertical Pump is a practical, cost-effective replacement for many common gas pressure washers when you need to restore cleaning performance without replacing the whole machine. It offers quick installation, a maintenance-ready design and useful protective features, making it a smart choice for homeowners and light pros who confirm a 7/8' shaft and the 3400 PSI / 2.5 GPM match their equipment.

Frequently Asked Questions

Will this pump fit my Ryobi or Honda machine?
If your machine uses a vertical 7/8' shaft and standard 3/4' NH inlet with M22 outlet threads, this pump is designed to be compatible.

Does the pump require oil before first use?
No, it ships prefilled and sealed so it is ready to install and run without initial oil filling.

What should I do if pressure or fit seem off?
Check that shaft alignment, mounting bolt spacing and hose thread types match your unit; customers report mixed fit on some models so verifying dimensions before purchase helps avoid issues.