{"product_id":"canpump-cf-4040-g-pressure-washer-pump-4000-psi-4-0-gpm-1-shaft-triplex-plunger-forged-brass-head","title":"CANPUMP CF 4040 G Pressure Washer Pump — 4000 PSI, 4.0 GPM, 1\" Shaft, Triplex Plunger, Forged Brass Head","description":"\u003cp\u003e\u003cstrong\u003eThe CANPUMP CF 4040 G is a commercial-grade triplex plunger pressure-washer pump delivering up to 4000 psi at 4.0 US gpm with a 1-inch shaft for direct-drive gas engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis heavy-duty replacement pump is built for contractors, prosumers and serious homeowners who need consistent high pressure, durability and easy setup. It combines a forged brass head, ceramic-coated stainless plungers, an anodized aluminum crankcase and German-made seals to withstand regular use. The external detachable unloader with extended bypass improves idle recirculation cooling and helps protect seals and internal components during intermittent operation.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the CF 4040 G fit my engine and power-washer frame?\u003c\/h3\u003e\n\n\u003cp\u003eThe CF 4040 G uses a standard SAE J609-A four-bolt flange and a 1-inch shaft to mate with many common 13 hp (390cc-class) horizontal-shaft gas engines. It’s prefilled with SAE 15W-40 oil and includes a sight glass for easy oil checks.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCompatibility: Fits Honda GX390\/GX340, Briggs \u0026amp; Stratton, Generac, Simpson and similar engines\u003c\/li\u003e\n  \u003cli\u003eMounting: SAE J609-A 4-bolt flange for direct-drive setups\u003c\/li\u003e\n  \u003cli\u003eShaft: 1-inch diameter for secure coupling to common couplers\u003c\/li\u003e\n  \u003cli\u003ePre-filled oil and sight glass for quick commissioning\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance can I expect under typical use?\u003c\/h3\u003e\n\n\u003cp\u003eDesigned for demanding cleaning jobs, the pump provides up to 4000 psi at 4.0 US gpm and operates up to 3400 RPM. The triplex plunger design delivers smoother pressure output and longer working life compared with axial-plunger alternatives.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMax pressure: 4000 psi, ideal for heavy-duty cleaning tasks\u003c\/li\u003e\n  \u003cli\u003eMax flow: 4.0 US gpm for efficient material removal\u003c\/li\u003e\n  \u003cli\u003ePlunger mechanism: Triplex for stable pressure and reduced pulsation\u003c\/li\u003e\n  \u003cli\u003eOperating limits: Inlet temp up to 122°F and inlet pressure 0–50 psi\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich features protect the pump during idle or demanding cycles?\u003c\/h3\u003e\n\n\u003cp\u003eThe external detachable unloader includes an extended bypass to reduce heat build-up when the gun is closed and the pump is recirculating. High-quality materials—ceramic-coated plungers, forged steel crankshaft and premium seals—also extend service life and resistance to corrosion.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eExtended bypass unloader for better heat dissipation during idle recirculation\u003c\/li\u003e\n  \u003cli\u003eForged brass head and anodized crankcase for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eCeramic-coated stainless plungers and German seals for longevity\u003c\/li\u003e\n  \u003cli\u003eOil grade SAE 15W-40 and integrated sight glass for maintenance ease\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will this pump change my cleaning tasks?\u003c\/h3\u003e\n\n\u003cp\u003eUpgrading to a commercial-grade triplex pump delivers steadier pressure, improved cleaning consistency and longer intervals between service. It’s particularly useful when restoring older machines or building a custom pressure washer where dependable performance matters.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eBetter surface cleaning with stable psi at varying flow rates\u003c\/li\u003e\n  \u003cli\u003eLess vibration and smoother operation than axial pumps\u003c\/li\u003e\n  \u003cli\u003eSuitable for driveways, decks, siding, vehicles and heavy equipment\u003c\/li\u003e\n  \u003cli\u003ePrefilled and ready to install for fast setup\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The CANPUMP CF 4040 G is aimed at professional cleaners, rental fleet operators, equipment rebuilders and serious DIYers who run 13 hp class horizontal-shaft gas engines and need a robust, long-lasting replacement or upgrade pump. If you rely on steady high pressure and low downtime for demanding cleaning jobs, this pump gives the materials, cooling features and mounting compatibility to perform reliably.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this pump fit my Honda GX390 engine?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The CF 4040 G uses an SAE J609-A four-bolt flange and 1-inch shaft compatible with Honda GX390-style horizontal-shaft engines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the pump ready to install out of the box?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s prefilled with SAE 15W-40 oil and includes a sight glass for immediate installation and quick oil inspection.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CANPUMP","offers":[{"title":"Default Title","offer_id":56805536006484,"sku":"B0CTQXX3CX","price":506.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/canpump-cf4040-front-assembly.jpg?v=1786806082","url":"https:\/\/gardenluxe.co.uk\/products\/canpump-cf-4040-g-pressure-washer-pump-4000-psi-4-0-gpm-1-shaft-triplex-plunger-forged-brass-head","provider":"Gardenluxe Uk","version":"1.0","type":"link"}