The ROP Shop pressure washer pump 2600 PSI 2.4 GPM — 7/8" horizontal shaft, includes unloader

This compact pump from The ROP Shop is built for small engine pressure washers and is compatible with many horizontal-shaft engines such as Honda GC160. It ships complete with a chemical injector, unloader and thermal relief valve, inlet/outlet fittings, sight glass and drain plug for straightforward service. The unit requires about 5 HP to reach working pressure and accepts standard garden-hose inlet connections while keeping oil maintenance simple with a 75 ml oil capacity.

What power and performance can I expect from this pump?

The Himore 2.4G26 produces a maximum pressure of 2,600 PSI and a peak flow of 2.4 gallons per minute at up to 3,400 RPM. It’s designed to work up to approximately 6.5 horsepower engines and accepts water temperatures up to 140°F, making it suitable for most light-to-medium cleaning jobs.

• Maximum pressure: 2,600 PSI for high-pressure cleaning.
• Maximum flow: 2.4 GPM for efficient water use.
• Max pump speed: 3,400 RPM; supports engines up to 6.5 GHP.
• Water temperature rating: up to 140°F for warm-water cleaning tasks.

How does this pump install and which engines will it fit?

This is a horizontal-mount pump (oil cap up) with a 7/8" hollow short shaft and keyway; the bolt pattern matches common small-engine configurations. It’s intended to fit many horizontal-shaft engines—often Honda GC160-style mounts—so verify your shaft type and mounting bolt centers before purchase.

• Shaft: 7/8" hollow short shaft with keyway (3/16" x 1/4" x 1-1/8").
• Bolt pattern: 2 5/8" center-to-center and 1 7/8" to each outer hole.
• Mount orientation: horizontal only; pump head is not reversible.
• Includes a hose, keyway and mounting hardware as pictured.

What maintenance and fluids does the pump require?

The pump uses about 75 mL (2.5 oz) of 85W-90 gear oil (not included), and features a sight glass plus a drain plug for easy checks and oil changes. It also includes a thermal relief valve to help protect the unit from overheating; do not exceed the rated PSI to avoid damage.

• Oil capacity: 75 mL (2.5 oz) of 85W-90 gear oil (purchase separately).
• Sight glass and drain plug for quick oil inspection and changeouts.
• Thermal relief valve pre-installed for temperature protection.
• Do not run the pump beyond its 2,600 PSI maximum rating.

What connections and accessories are included?

The pump arrives ready to install with a chemical injector, outlet tube, unloader valve, oil cap, a hose, and a keyway. The inlet accepts a standard garden hose and the outlet uses a 22mm male tube connection for common pressure-washer fittings.

• Included: chemical injector, unloader valve, outlet tube, oil cap, keyway and hose.
• Inlet: standard garden-hose connection for easy plumbing.
• Outlet: 22mm male tube connection for pressure fittings.
• Comes assembled as shown in the main product photo.

Who is this for: This Himore 2.4G26 pump is aimed at owners of compact pressure-washer units, rental or DIY users who need a direct replacement for horizontal-shaft pumps on engines like the Honda GC160. It’s most appropriate for those who require reliable light-to-medium duty cleaning performance, straightforward maintenance access, and a pump that mounts horizontally with a 7/8" hollow shaft. Verify compatibility with your engine shaft, bolt pattern and power output before ordering to ensure a proper fit and safe operation.