4 GPM Triplex Pump 4000 PSI

Triplex-style replacement pump for commercial pressure washer service and build projects.

Before shipping, verify PSI, GPM, hose ID, thread type, machine model and inlet/outlet requirements. For pumps, valves, burners and electrical parts, confirm the original part number or send photos to support.

• Pressure washer fittings commonly vary by NPT, quick connect size and thread direction.
• Hose reel capacity depends on hose diameter and drum width.
• Battery products require matched voltage, controller and charger specifications.

Typical related parts for this category may include O-rings, couplers, swivels, adapters, valves, hoses, mounting hardware and service kits. Use the related products below to build a complete repair or installation kit.