HomePressure Washer PumpsCAT Pumps 67DX39G1I - 4000 PSI 3.9 GPM (1" Shaft) Triplex Pressure Washer Pump with Adjustable Unloader and Chemical InjectorAmerican Pressure Inc.CAT Pumps 67DX39G1I - 4000 PSI 3.9 GPM (1" Shaft) Triplex Pressure Washer Pump with Adjustable Unloader and Chemical Injector$554.00View on Amazon0Compare with similar productsBluePressure Washer PumpsAbout this productMaximum Pressure Rating: 4000 PSI Maximum Flow Rating: 3.9 GPM Maximum RPM: 3450 RPM - Drive Type: DirectKey FeaturesMaximum Pressure Rating: 4000 PSIMaximum Flow Rating: 3.9 GPMMaximum RPM: 3450 RPM - Drive Type: DirectMaximum Temperature: 140 degrees FInlet Port Size 1/2"(F) - Discharge Port Size 3/8" NPT(F)Best Seller Rank HistoryNow#72Best#72Worst#72Lower = better sales rankSimilar ProductsDuragard Way and Slide 68-5 Gallon Pail (Vactra 2 Replacement)0.0(22)$109.870DuragardTOOLCY Pressure Washer Pump 3600-4400 PSI Max, 4 GPM Triplex Plunger Pressure Pump, Horizontal 1 inch Shaft Gas Power Washer Pump with Pressure Adjustment Unloader, Direct Drive0.0(91)$188.970TOOLCYTOOLCY Pressure Washer Pump 3600-4400 PSI Max 4.4 GPM, 1 inch Shaft Horizontal Triplex Plunger Power Washer Pump Replacement, Direct Drive Pressure Pump with Unloader, 5 Nozzle Tips, M22-14mm Adapter0.0(92)$198.980TOOLCYNo Image1" Shaft Triplex Pressure Washer...$179.990No ImageHorizontal Triplex Pressure Wash...$173.990No ImageShocker Air Hitch & Combo Ball (...$676.690No Image100879 Reedless Flow Switch with...$96.500User ReviewsPlease sign in to leave a reviewSort by:NewestHighest RatedMost HelpfulNo reviews yet. Be the first to review!