{"product_id":"biswing-pressure-washer-pump-7-8-inch-shaft-vertical-plunger-3400-psi-2-5-gpm","title":"Biswing Pressure Washer Pump 7\/8-inch Shaft Vertical Plunger — 3400 PSI, 2.5 GPM","description":"\u003cp\u003e\u003cstrong\u003eBiswing’s replacement pressure washer pump is a vertical-plunger, 7\/8\" shaft unit rated to 3400 PSI and 2.5 GPM for gas-powered cold-water washers.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your gas pressure washer with a 7\/8\" horizontal crankshaft has lost pressure or begun leaking, this Biswing pump is built as a direct-fit replacement for many 6.5–7 HP (180–225 cc) engines. The pump combines an aluminum-alloy body with a thermal relief valve, standard garden-hose and M22 fittings, and comes with the common hardware and detergent hose needed for installation. It is designed for cold-water cleaning tasks and optimized for compatibility with top consumer models that accept a vertical plunger pump with a 7\/8\" drive.\u003c\/p\u003e\n\n\u003ch3\u003eWhat engine and shaft sizes does this Biswing pump fit?\u003c\/h3\u003e\n\u003cp\u003eThis pump is intended for engines with a horizontal 7\/8\" crankshaft and is commonly used on 6.5–7 HP (180–225 cc) gas power washers. Confirm your machine’s shaft size and orientation before ordering to ensure a correct fit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e7\/8\" shaft diameter fits standard horizontal engines\u003c\/li\u003e\n  \u003cli\u003eBest suited for 6.5–7 HP (180–225 cc) engines\u003c\/li\u003e\n  \u003cli\u003eNot for vertical-shaft or electric-only motor assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow much pressure and flow does the pump provide?\u003c\/h3\u003e\n\u003cp\u003eThe Biswing pump delivers up to 3400 PSI maximum working pressure and flows at 2.5 GPM, giving a balance of force and water volume for heavy-duty residential cleaning. These ratings describe peak performance—actual output depends on your engine’s condition and nozzle selection.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaximum working pressure: 3400 PSI\u003c\/li\u003e\n  \u003cli\u003eFlow rate: 2.5 gallons per minute (GPM)\u003c\/li\u003e\n  \u003cli\u003ePerformance varies with engine RPM and nozzle choice\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich fittings and accessories come with the replacement pump?\u003c\/h3\u003e\n\u003cp\u003eThe pump includes the common inlet and outlet connections used by many consumer washers and a selection of mounting hardware to simplify installation. If your hose uses a nonstandard connector, an adapter may be needed (not included).\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/4\" NH garden-hose style inlet for water supply\u003c\/li\u003e\n  \u003cli\u003eM22-14 male-thread high-pressure outlet for hose connection\u003c\/li\u003e\n  \u003cli\u003eIncludes detergent hose, shaft keys, bolts, locknuts, and flat pads\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and safety features are built into the pump?\u003c\/h3\u003e\n\u003cp\u003eConstructed with an aluminum-alloy housing, the pump aims to be lightweight yet durable while resisting wear around seals and fasteners. A built-in thermal relief valve helps prevent overheating during stalled or restricted-flow conditions to protect internal components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAluminum-alloy pump body for corrosion resistance and strength\u003c\/li\u003e\n  \u003cli\u003eIntegrated thermal relief valve to reduce overheat risk\u003c\/li\u003e\n  \u003cli\u003eDesigned for cold-water use only; oil\/water seals optimized for durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Biswing 3400 PSI, 2.5 GPM replacement pump is for homeowners, rental businesses, and light commercial users who need a reliable, direct-replacement pump for gas power washers with a horizontal 7\/8\" shaft. Choose this pump if you want a durable aluminum-body unit with standard NH and M22 fittings, included mounting hardware and detergent hose, and a thermal relief feature for safer operation during heavy cleaning jobs. Do double-check compatibility with your engine’s shaft orientation, connector threads, and cold-water designation before purchase.\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: Can this pump handle hot water?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This Biswing pump is designed for cold-water use only.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will it fit my Simpson or Honda washer?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fits many Simpson and Honda models with a horizontal 7\/8\" shaft; verify your shaft size and thread type first.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Biswing","offers":[{"title":"Default Title","offer_id":56835685482836,"sku":"B0CQR6XTDV","price":104.26,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/biswing-front-view-pump.jpg?v=1787057748","url":"https:\/\/gardenluxe.co.uk\/products\/biswing-pressure-washer-pump-7-8-inch-shaft-vertical-plunger-3400-psi-2-5-gpm","provider":"Gardenluxe Uk","version":"1.0","type":"link"}