{"product_id":"ez4040g-pump-4gpm-4000psi","title":"General Pump EZ4040G Plunger Pump | 4.0 GPM @ 4000 PSI | 1\" Hollow Shaft","description":"\u003cp\u003eThe \u003cstrong\u003eGeneral Pump EZ4040G\u003c\/strong\u003e is one of the most popular direct-drive triplex plunger pumps on the market for commercial pressure washing skids and premium mobile detailing rigs. Engineered to bolt directly onto a gas engine with a \u003cstrong\u003e1-inch horizontal shaft\u003c\/strong\u003e (such as the Honda GX390), this pump eliminates the need for expensive external gearboxes or belt drive configurations.\u003c\/p\u003e\u003cp\u003eIt features a \u003cstrong\u003eforged brass manifold\u003c\/strong\u003e, solid ceramic plungers, and a die-cast anodized aluminum crankcase that dissipates heat efficiently. The unit comes complete with a built-in unloader valve and a downstream chemical injector — a compact, plug-and-play choice for fast field replacement.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Rate:\u003c\/strong\u003e 4.0 GPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Pressure:\u003c\/strong\u003e 4,000 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft:\u003c\/strong\u003e 1\" Hollow Shaft (direct drive)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Port:\u003c\/strong\u003e 1\/2\" FPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Port:\u003c\/strong\u003e 3\/8\" FPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrankcase Oil Capacity:\u003c\/strong\u003e 14.0 oz (GP Series 100 non-detergent 30W)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry Weight:\u003c\/strong\u003e 14.7 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 7.9\" x 7.3\" x 5.6\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e EZ4040G\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest Use Case\u003c\/h3\u003e\u003cp\u003eDirect-drive setups running \u003cstrong\u003e11–15 HP gas engines\u003c\/strong\u003e. Ideal for roof washing, surface cleaning, and commercial property maintenance.\u003c\/p\u003e\u003ch3\u003ePro Maintenance Tip\u003c\/h3\u003e\u003cp\u003eDirect-drive pumps run at engine speed (\u003cstrong\u003e3,400 RPM\u003c\/strong\u003e), creating more heat and wear than belt-drive systems. Change pump oil after the first \u003cstrong\u003e50 hours\u003c\/strong\u003e of break-in, then every \u003cstrong\u003e100 hours\u003c\/strong\u003e thereafter to maximize packing life.\u003c\/p\u003e","brand":"General Pump","offers":[{"title":"Default Title","offer_id":45599355502729,"sku":"6076","price":419.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/3100\/0713\/files\/EZ4040G.jpg?v=1779898044","url":"https:\/\/perfectlypricedpressure.com\/products\/ez4040g-pump-4gpm-4000psi","provider":"Perfectly Priced Pressure Products","version":"1.0","type":"link"}