EZJOB Vertical Pressure Washer Pump 7/8" Shaft — 3400 PSI, 2.5 GPM Pre-Filled Oil

EZJOB's vertical pressure washer pump delivers up to 3400 PSI and 2.5 GPM on a 7/8" shaft for reliable engine-driven cleaning power.

This replacement pump is engineered for gasoline-powered pressure washers with vertical 7/8" shafts and mid-size engines (approx. 180–225 cc, 6.5–7 HP). It comes pre-filled with oil and includes essential hardware such as an unloader, thermal relief valve, M22 outlet, and 3/4 NH inlet, so you can swap it in quickly and get back to cleaning without extra prep.

Will this pump fit my pressure washer engine?

Check three key measurements before purchasing: shaft type, shaft diameter, and engine mounting pattern. This unit is a vertical shaft model sized for 7/8" (0.875") shaft applications and is intended for engines around 180–225 cc or 6.5–7 HP.

• Shaft: vertical orientation, 7/8" diameter (keyway included)
• Engine size: fits 180–225 cc (6.5–7 HP) gasoline engines
• Mounting: SAE gas engine flange — verify bolt pattern and clearance

How durable and maintenance-free is this EZJOB pump?

The pump arrives pre-filled with oil and features a double-seal system, reducing routine maintenance and simplifying installation. The die-cast aluminum body resists corrosion while internal components are built for extended runtimes.

• Pre-filled oil: factory-filled for immediate use
• Double-seal system: improved leak resistance and longevity
• Die-cast aluminum housing: corrosion-resistant construction
• Rated runtime: up to approximately 150 operating hours

What pressure and flow performance can I expect?

This model covers a working range from roughly 2600 to 3400 PSI with a flow rate of 2.5 GPM, suitable for heavy-duty residential and light commercial cleaning tasks. A built-in unloader and thermal relief valve help protect the pump and engine under varying loads.

• Maximum pressure: up to 3400 PSI
• Typical operating range: ~2600–3400 PSI depending on engine output
• Flow rate: 2.5 GPM for efficient cleaning performance
• Protections: unloader and thermal relief valve included

What hardware and fittings are included for installation?

The pump ships with the fittings and features needed for a straightforward swap: keyway stock on the shaft, M22 outlet, 3/4 NH inlet with copper nut, and the SAE flange for mounting to gas engine blocks. The easy-start (EZ) valve helps reduce initial resistance for quicker cranking.

• Keyway stock on 7/8" shaft for secure coupling
• M22 outlet and 3/4 NH inlet with copper nut
• Included unloader, thermal relief valve, and EZ easy-start valve
• SAE gas engine flange for standard engine mounting

Who this is for: This EZJOB pump is aimed at homeowners and light-commercial users who need a drop-in replacement for vertical-shaft gasoline pressure washers with 7/8" shafts and 180–225 cc engines. Choose this unit if you want a ready-to-install pump with pre-filled oil, common fittings, and protections like an unloader and thermal relief valve. If your machine uses a different shaft size, horizontal orientation, or a nonstandard mounting pattern, verify compatibility before ordering.