GP EZ4040G Pump Assembly – 4.2 GPM, 4,200 PSI, 1" Shaft

Pro Triplex Pump for Heavy Duty Cleaning The GP EZ4040G Pump Assembly (Bare Pump Part #85.130.021) is a professional triplex direct-drive gas pump for pros and contractors who need reliable, long lasting performance in high demand applications. With 4,200 PSI at 4.2 GPM this pump has cutting pressure and volume to tackle the toughest cleaning jobs. Made by General Pump (GP) one of the most trusted names in pump technology the EZ4040G has a brass manifold, ceramic plungers and external unloader for years of trouble free operation. Backed by a 5 year warranty this pump is for contractors, industrial operators and serious users who need results. Features Bare Pump Part #: 85.130.021 Pump Manufacturer: General Pump (GP) Pump Model: EZ4040G Pump Style: Triplex, direct-drive gas Max PSI: 4,200 Max GPM: 4.2 Shaft Size: 1" horizontal shaft Unloader Type: External (85.300.037) Plunger (Piston): Ceramic for maximum heat and wear resistance Inlet Size: 3/4" GHF (garden hose fitting) Discharge Size: 3/8" Brass QC (85.300.108) Soap Injector: Adjustable (85.400.000) Manifold Type: Brass RPM: 3,450 Max Inlet Temp: 74°C / 165°F Thermal Relief Valve: 85.300.023 included Oil Capacity: 14 oz Oil Type: 30W non-detergent oil Weight: 20 lbs Warranty: 5 Years Built for Pro PowerThe triplex plunger design of the EZ4040G sets it apart from axial pumps with smoother operation, less vibration and longer life. Three ceramic plungers are engineered to handle high temp and abrasion for consistent high performance. With 4,200 PSI and 4.2 GPM this pump has the best balance of raw cleaning power and coverage. It’s for demanding jobs like stripping paint, blasting oil and grease from heavy equipment, or fleet and construction cleaning. Durable Construction Every part of the EZ4040G is engineered for strength and long life: Ceramic plungers for maximum durability under heavy use. Brass manifold for corrosion resistance, strength and heat dissipation. 1” horizontal shaft for compatibility with commercial grade gas engines. At 20 lbs the EZ4040G is solidly built and easy to install making it a great replacement pump for professional pressure washers. Operator Features This pump has integrated features to make operation simple and efficient: External unloader (85.300.037): Easy access and pressure regulation, simplifies maintenance and replacement. Adjustable soap injector (85.400.000): Controlled application of detergents or chemicals for better cleaning. Brass quick-connect discharge (3/8” – 85.300.108): Secure and leak free connections for hoses and accessories. Thermal relief valve (85.300.023): Protects the pump from heat damage during extended bypass operation by purging overheated water. Maintenance The EZ4040G is designed for serviceability so operators can extend pump life with simple maintenance routines. 14 oz of 30W non-detergent oil for lubrication. Oil checks and scheduled changes keep the pump running smooth. Designed to handle inlet water temp up to 165°F (74°C) for more versatility for jobs that use hot water. These features make the EZ4040G good for everyday and high demand use. Applications The General Pump EZ4040G Pump Assembly is built for tough cleaning jobs across multiple industries. With high PSI and strong water volume it’s perfect for:* Construction Cleaning – Remove heavy mud, dirt and debris from equipment and job sites. Fleet Washing – Wash buses, trucks, trailers and heavy duty vehicles with professional results. Agriculture – Keep tractors, harves