Hourleey 7/8" Shaft Vertical Pressure Washer Pump 3400 PSI 2.5 GPM — Pre-filled, Detergent Hose Included

Hourleey's 7/8" shaft vertical pressure washer pump is a ready-to-install replacement pump rated at 3400 PSI and 2.5 GPM that fits many gas-powered units and restores powerful cleaning performance.

If your pressure washer has lost pressure or developed leaks, this Hourleey vertical pump provides a cost-effective way to bring it back to life without buying a new machine. The unit arrives pre-filled with oil, includes installation hardware and a detergent hose, and features a maintenance-free crankcase plus a double-seal design to reduce early failures. Built for common gas engines, the pump is engineered to match standard plumbing and shaft measurements used by leading manufacturers.

Will this pump physically fit my pressure washer?

The Hourleey pump uses a 7/8" drive shaft and a vertical mounting pattern, which are common on many gas pressure washers. It also has a 3/4" NH garden hose inlet and a threaded M22 high-pressure outlet that match typical hose and wand connections.

• 7/8" straight shaft for common gas engines
• Vertical mount bolt pattern compatible with many models
• 3/4" NH inlet and M22 high-pressure outlet for standard hoses
• Works with brands like Honda, Simpson, RYOBI, Briggs & Stratton, Subaru, Craftsman

How easy is installation and what comes in the kit?

Hourleey designed the pump for a quick swap: it ships with the basic hardware and fittings needed for most installs and is pre-filled with oil, removing the need for initial oil filling. The instructions guide you through alignment and bolt-up so a mechanic or a handy DIYer can complete the job in minutes rather than hours.

• Includes detergent hose, shaft key, and three M8 x 40 bolts
• Comes with three flat pads and three spring washers for stable mounting
• Pre-filled oil and maintenance-free crankcase for immediate use
• Instruction manual covers cold-start and pressure precautions

What performance and durability features should I expect?

This pump delivers rated flow and pressure—3400 PSI at 2.5 GPM—making it suitable for medium- to heavy-duty cleaning tasks like decks, driveways, and vehicle exteriors. Hourleey emphasizes longer component life through improved plunger materials, a one-piece pump head for better sealing, and a metal shaft sleeve to reduce oil leaks.

• 3400 PSI and 2.5 GPM performance rating for strong cleaning power
• Double seal system and metal shaft sleeve to help prevent leaks
• Thermal relief valve protects the pump from overheating in bypass
• Enhanced plunger and seal materials for extended service life

Are there maintenance steps or limitations I should know?

The pump arrives ready to run and minimizes routine upkeep thanks to its sealed crankcase and pre-filled oil, but normal pressure washer care still applies. Avoid running the machine dry, flush detergent lines after use, and follow manufacturer torque specs during installation.

• No initial oil fill required; pre-filled and sealed crankcase
• Do not run without water supply to avoid damage
• Flush detergent hose and store in frost-free conditions to prolong life
• Check fittings and seals periodically for wear or leaks

Who is this for: The Hourleey 7/8" shaft vertical pump is aimed at homeowners, rental fleets, landscapers, and repair technicians who need a dependable replacement for gas-powered pressure washers rated around 3400 PSI and 2.5 GPM. It suits users who prefer repairing equipment to replacing it, and who want a ready-to-install, low-maintenance pump compatible with a wide range of popular brands.