Generac Axial Pressure Washer Pump 2.5GPM 3000PSI OEM #0J7764

Restore full cleaning power to your Generac residential gas pressure washer with the genuine OEM Axial Pump (Part #0J7764). This is a brand new genuine Generac axial pressure washer pump rated at 2.5 GPM and 3000 PSI — the heart of Generac’s residential pressure washer lineup. When your washer loses pressure, fails to build pressure, or leaks from the pump head, this direct OEM replacement restores factory-spec output in a straightforward repair. Pump comes with hose included.

Compatible Models: Fits Generac Models 6598, 6599, and 6602. Always verify your model number before ordering.

Key Features:

• Genuine OEM Axial Pump – Genuine Generac Part #0J7764, fits specific Generac models requiring this part number, manufactured to exact factory specifications for guaranteed performance and fit
• 2.5 GPM / 3000 PSI Rated Output – Delivers the pressure and flow rate needed for heavy-duty residential cleaning tasks including driveways, siding, decks, vehicles, and equipment
• Easy-Access Axial Design – Easy-access axial cam pump means no more kneeling on the ground to make hose connections — hose connections are positioned upright for maximum convenience
• Perfectly Balanced Integration – Engine and pump are perfectly balanced over the axle for almost effortless maneuverability when reinstalled in the original washer frame
• Includes Hose – Pump comes with hose — eliminates the need to source the connection hose separately
• Built for Residential Cleaning Performance – Delivers the cleaning power, reliability, and ease of use in an affordable, compact design ideal for tackling the full range of residential exterior cleaning tasks
• Direct-Fit Replacement – Engineered to the same mounting pattern, shaft engagement, and port configuration as the original pump for drop-in installation

What This Pump Powers: The Generac 6598, 6599, and 6602 pressure washers are ideal for cleaning everything from patio furniture and decks, to siding and driveways — even prepping for a painting job. With their large OHV horizontal shaft engines and easy-access axial cam pump, these pressure washers deliver the cleaning power, reliability, and ease of use in an affordable, compact design.

Most Common Reasons to Replace the Pump:

• Loss of pressure or inability to reach rated PSI
• Pump leaking from head, seals, or inlet/outlet ports
• Pump seized or frozen after running dry
• Visible cracking or damage to pump housing
• Water contamination in the pump oil

Why Genuine OEM? Aftermarket axial pumps may not match the exact mounting bolt pattern, shaft engagement depth, port sizing, or internal valve configuration of the original Generac pump — resulting in leaks, reduced pressure, or misalignment that damages the engine crankshaft. This genuine Generac OEM pump is manufactured to the exact specifications of the original, ensuring a safe, reliable, leak-free installation that restores the washer’s full rated output.

Part Details:

• OEM Part Number: 0J7764
• Part Type: Axial Pressure Washer Pump
• Flow Rate: 2.5 GPM
• Pressure Rating: 3000 PSI
• Includes: Hose
• Compatible Models: Generac 6598, 6599, 6602
• Brand: Generac (Genuine OEM)
• Equipment Type: Residential Gas Pressure Washer