{"product_id":"ar-rka4g40hn-l-pressure-washer-pump-4-0-gpm-4000-psi-24mm-long-shaft-1-1-2-right-hand","title":"AR RKA4G40HN-L Pressure Washer Pump – 4.0 GPM 4000 PSI 24mm Long Shaft 1-1\/2\" Right Hand","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a41e0a9-6a1c-83ea-8a2f-44e0120c15c3-95\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a41e0a9-6a1c-83ea-8a2f-44e0120c15c3-95\" data-turn-id-container=\"request-6a41e0a9-6a1c-83ea-8a2f-44e0120c15c3-95\" data-testid=\"conversation-turn-106\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"2c0fd49b-b170-4307-8f9f-46f30f24f334\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"218\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e RKA4G40HN-L\u003cbr data-start=\"28\" data-end=\"31\"\u003e\u003cstrong data-start=\"31\" data-end=\"44\"\u003eCategory:\u003c\/strong\u003e Pressure Washer Pumps → Triplex Pumps → Belt Drive Pressure Washer Pumps\u003cbr data-start=\"117\" data-end=\"120\"\u003e\u003cstrong data-start=\"120\" data-end=\"129\"\u003eType:\u003c\/strong\u003e AR RKA4G40HN-L Pressure Washer Pump – 4.0 GPM 4000 PSI 24mm Long Shaft 1-1\/2\" Right Hand\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"220\" data-end=\"223\"\u003e\n\u003cp data-start=\"317\" data-end=\"772\"\u003eThe \u003cstrong data-start=\"321\" data-end=\"380\"\u003eAR RKA4G40HN-L Pressure Washer Pump (Part #RKA4G40HN-L)\u003c\/strong\u003e is a genuine OEM triplex plunger pump engineered for demanding commercial and industrial pressure washing applications. Built by \u003cstrong data-start=\"510\" data-end=\"535\"\u003eAnnovi Reverberi (AR)\u003c\/strong\u003e, this heavy-duty pump delivers \u003cstrong data-start=\"567\" data-end=\"591\"\u003e4.0 GPM at 4,000 PSI\u003c\/strong\u003e, providing exceptional cleaning performance for fleet washing, construction equipment, agricultural equipment, industrial facilities, and other continuous-duty cleaning operations.\u003c\/p\u003e\n\u003chr data-start=\"1450\" data-end=\"1453\"\u003e\n\u003ch1 data-section-id=\"1oef6j8\" data-start=\"1455\" data-end=\"1480\"\u003eKey Features \u0026amp; Benefits\u003c\/h1\u003e\n\u003cul data-start=\"1482\" data-end=\"2029\"\u003e\n\u003cli data-section-id=\"xeztqs\" data-start=\"1482\" data-end=\"1546\"\u003eGenuine AR (Annovi Reverberi) OEM triplex pressure washer pump\u003c\/li\u003e\n\u003cli data-section-id=\"pe14a6\" data-start=\"1547\" data-end=\"1573\"\u003ePart Number: RKA4G40HN-L\u003c\/li\u003e\n\u003cli data-section-id=\"19tw6a9\" data-start=\"1574\" data-end=\"1609\"\u003eHeavy-duty triplex plunger design\u003c\/li\u003e\n\u003cli data-section-id=\"2eg04n\" data-start=\"1610\" data-end=\"1647\"\u003eDelivers up to 4.0 GPM at 4,000 PSI\u003c\/li\u003e\n\u003cli data-section-id=\"s0yvus\" data-start=\"1648\" data-end=\"1705\"\u003eLow-speed 1,750 RPM operation for extended service life\u003c\/li\u003e\n\u003cli data-section-id=\"1avs6de\" data-start=\"1706\" data-end=\"1735\"\u003e24 mm right-hand long shaft\u003c\/li\u003e\n\u003cli data-section-id=\"nfgidq\" data-start=\"1736\" data-end=\"1757\"\u003e1-1\/2\" shaft length\u003c\/li\u003e\n\u003cli data-section-id=\"q8vjgf\" data-start=\"1758\" data-end=\"1809\"\u003eCompatible with belt-drive and gear-drive systems\u003c\/li\u003e\n\u003cli data-section-id=\"17wrkuh\" data-start=\"1810\" data-end=\"1841\"\u003eRequires approximately 11 BHP\u003c\/li\u003e\n\u003cli data-section-id=\"d3o0qo\" data-start=\"1842\" data-end=\"1879\"\u003eSuitable for engines up to 14.5 GHP\u003c\/li\u003e\n\u003cli data-section-id=\"n3cabi\" data-start=\"1880\" data-end=\"1932\"\u003eSmooth, efficient operation with reduced vibration\u003c\/li\u003e\n\u003cli data-section-id=\"dyoa7y\" data-start=\"1933\" data-end=\"1988\"\u003eDesigned for continuous commercial and industrial use\u003c\/li\u003e\n\u003cli data-section-id=\"1cnwj99\" data-start=\"1989\" data-end=\"2029\"\u003eOEM-quality durability and performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2031\" data-end=\"2034\"\u003e\n\u003ch1 data-section-id=\"zjxypn\" data-start=\"2036\" data-end=\"2062\"\u003eTechnical Specifications\u003c\/h1\u003e\n\u003cp data-start=\"2064\" data-end=\"2092\"\u003e\u003cstrong data-start=\"2064\" data-end=\"2080\"\u003ePart Number:\u003c\/strong\u003e RKA4G40HN-L\u003c\/p\u003e\n\u003cp data-start=\"2094\" data-end=\"2121\"\u003e\u003cstrong data-start=\"2094\" data-end=\"2109\"\u003ePump Model:\u003c\/strong\u003e RKA4G40HN-L\u003c\/p\u003e\n\u003cp data-start=\"2123\" data-end=\"2162\"\u003e\u003cstrong data-start=\"2123\" data-end=\"2140\"\u003eManufacturer:\u003c\/strong\u003e AR (Annovi Reverberi)\u003c\/p\u003e\n\u003cp data-start=\"2164\" data-end=\"2210\"\u003e\u003cstrong data-start=\"2164\" data-end=\"2181\"\u003eProduct Type:\u003c\/strong\u003e Triplex Pressure Washer Pump\u003c\/p\u003e\n\u003cp data-start=\"2212\" data-end=\"2242\"\u003e\u003cstrong data-start=\"2212\" data-end=\"2234\"\u003eMaximum Flow Rate:\u003c\/strong\u003e 4.0 GPM\u003c\/p\u003e\n\u003cp data-start=\"2244\" data-end=\"2275\"\u003e\u003cstrong data-start=\"2244\" data-end=\"2265\"\u003eMaximum Pressure:\u003c\/strong\u003e 4,000 PSI\u003c\/p\u003e\n\u003cp data-start=\"2277\" data-end=\"2310\"\u003e\u003cstrong data-start=\"2277\" data-end=\"2300\"\u003eMaximum Pump Speed:\u003c\/strong\u003e 1,750 RPM\u003c\/p\u003e\n\u003cp data-start=\"2312\" data-end=\"2342\"\u003e\u003cstrong data-start=\"2312\" data-end=\"2339\"\u003eBrake Horsepower (BHP):\u003c\/strong\u003e 11\u003c\/p\u003e\n\u003cp data-start=\"2344\" data-end=\"2374\"\u003e\u003cstrong data-start=\"2344\" data-end=\"2369\"\u003eGas Horsepower (GHP):\u003c\/strong\u003e 14.5\u003c\/p\u003e\n\u003cp data-start=\"2376\" data-end=\"2397\"\u003e\u003cstrong data-start=\"2376\" data-end=\"2391\"\u003eShaft Size:\u003c\/strong\u003e 24 mm\u003c\/p\u003e\n\u003cp data-start=\"2399\" data-end=\"2423\"\u003e\u003cstrong data-start=\"2399\" data-end=\"2416\"\u003eShaft Length:\u003c\/strong\u003e 1-1\/2\"\u003c\/p\u003e\n\u003cp data-start=\"2425\" data-end=\"2449\"\u003e\u003cstrong data-start=\"2425\" data-end=\"2438\"\u003eRotation:\u003c\/strong\u003e Right Hand\u003c\/p\u003e\n\u003cp data-start=\"2451\" data-end=\"2483\"\u003e\u003cstrong data-start=\"2451\" data-end=\"2472\"\u003ePump Orientation:\u003c\/strong\u003e Horizontal\u003c\/p\u003e\n\u003cp data-start=\"2485\" data-end=\"2503\"\u003e\u003cstrong data-start=\"2485\" data-end=\"2496\"\u003eWeight:\u003c\/strong\u003e 19 lbs\u003c\/p\u003e\n\u003cp data-start=\"2505\" data-end=\"2529\"\u003e\u003cstrong data-start=\"2505\" data-end=\"2525\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003chr data-start=\"2531\" data-end=\"2534\"\u003e\n\u003ch1 data-section-id=\"1w7a361\" data-start=\"2536\" data-end=\"2561\"\u003eCompatible Applications\u003c\/h1\u003e\n\u003cp data-start=\"2563\" data-end=\"2630\"\u003eDesigned for use with compatible pressure washer systems featuring:\u003c\/p\u003e\n\u003cul data-start=\"2632\" data-end=\"2957\"\u003e\n\u003cli data-section-id=\"1a6v3va\" data-start=\"2632\" data-end=\"2664\"\u003e24 mm long shaft drive systems\u003c\/li\u003e\n\u003cli data-section-id=\"1ik2xm9\" data-start=\"2665\" data-end=\"2698\"\u003e1-1\/2\" shaft length requirement\u003c\/li\u003e\n\u003cli data-section-id=\"88qffi\" data-start=\"2699\" data-end=\"2731\"\u003eRight-hand shaft configuration\u003c\/li\u003e\n\u003cli data-section-id=\"e1w54q\" data-start=\"2732\" data-end=\"2761\"\u003eBelt-drive pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"xch5v8\" data-start=\"2762\" data-end=\"2791\"\u003eGear-drive pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"1ftw8hk\" data-start=\"2792\" data-end=\"2821\"\u003eCommercial pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"1wpc0sg\" data-start=\"2822\" data-end=\"2853\"\u003eIndustrial cleaning equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1hb3h7x\" data-start=\"2854\" data-end=\"2877\"\u003eFleet washing systems\u003c\/li\u003e\n\u003cli data-section-id=\"1jcdcam\" data-start=\"2878\" data-end=\"2911\"\u003eAgricultural cleaning equipment\u003c\/li\u003e\n\u003cli data-section-id=\"noov52\" data-start=\"2912\" data-end=\"2957\"\u003eOEM equipment replacement and custom builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2959\" data-end=\"3113\"\u003eAlways verify shaft dimensions, shaft length, rotation, mounting configuration, horsepower requirements, and pressure\/flow specifications before ordering.\u003c\/p\u003e\n\u003chr data-start=\"3115\" data-end=\"3118\"\u003e\n\u003ch1 data-section-id=\"1ebu7jn\" data-start=\"3120\" data-end=\"3158\"\u003eFunction of the Pressure Washer Pump\u003c\/h1\u003e\n\u003cp data-start=\"3160\" data-end=\"3187\"\u003eThe RKA4G40HN-L pump helps:\u003c\/p\u003e\n\u003cul data-start=\"3189\" data-end=\"3478\"\u003e\n\u003cli data-section-id=\"1f0pk6l\" data-start=\"3189\" data-end=\"3230\"\u003eDeliver up to \u003cstrong data-start=\"3205\" data-end=\"3216\"\u003e4.0 GPM\u003c\/strong\u003e of water flow\u003c\/li\u003e\n\u003cli data-section-id=\"z8nl78\" data-start=\"3231\" data-end=\"3281\"\u003eGenerate operating pressures up to \u003cstrong data-start=\"3268\" data-end=\"3281\"\u003e4,000 PSI\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"ob8uf6\" data-start=\"3282\" data-end=\"3337\"\u003eProvide reliable continuous-duty cleaning performance\u003c\/li\u003e\n\u003cli data-section-id=\"qz9eti\" data-start=\"3338\" data-end=\"3380\"\u003eOperate efficiently at lower pump speeds\u003c\/li\u003e\n\u003cli data-section-id=\"63inim\" data-start=\"3381\" data-end=\"3420\"\u003eReduce heat buildup and internal wear\u003c\/li\u003e\n\u003cli data-section-id=\"1rf54za\" data-start=\"3421\" data-end=\"3478\"\u003eExtend equipment service life in demanding applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3480\" data-end=\"3626\"\u003eIts low-speed triplex plunger design provides superior durability, smoother operation, and longer service life than high-speed direct-drive pumps.\u003c\/p\u003e\n\u003chr data-start=\"3628\" data-end=\"3631\"\u003e\n\u003ch1 data-section-id=\"mqxmo4\" data-start=\"3633\" data-end=\"3669\"\u003eCommon Signs Replacement Is Needed\u003c\/h1\u003e\n\u003cp data-start=\"3671\" data-end=\"3702\"\u003eReplace the pump if you notice:\u003c\/p\u003e\n\u003cul data-start=\"3704\" data-end=\"3927\"\u003e\n\u003cli data-section-id=\"zu24k4\" data-start=\"3704\" data-end=\"3732\"\u003eReduced operating pressure\u003c\/li\u003e\n\u003cli data-section-id=\"1f1izt\" data-start=\"3733\" data-end=\"3755\"\u003eDecreased water flow\u003c\/li\u003e\n\u003cli data-section-id=\"10eqapm\" data-start=\"3756\" data-end=\"3776\"\u003eWater or oil leaks\u003c\/li\u003e\n\u003cli data-section-id=\"rs3f56\" data-start=\"3777\" data-end=\"3804\"\u003eExcessive operating noise\u003c\/li\u003e\n\u003cli data-section-id=\"1g2txwa\" data-start=\"3805\" data-end=\"3838\"\u003eCracked or damaged pump housing\u003c\/li\u003e\n\u003cli data-section-id=\"16xn7rj\" data-start=\"3839\" data-end=\"3864\"\u003eExcessive internal wear\u003c\/li\u003e\n\u003cli data-section-id=\"1alt067\" data-start=\"3865\" data-end=\"3895\"\u003eLoss of cleaning performance\u003c\/li\u003e\n\u003cli data-section-id=\"1s772py\" data-start=\"3896\" data-end=\"3927\"\u003ePump failure during operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3929\" data-end=\"4024\"\u003eReplacing a worn pump restores pressure washer performance while minimizing equipment downtime.\u003c\/p\u003e\n\u003chr data-start=\"4026\" data-end=\"4029\"\u003e\n\u003ch1 data-section-id=\"1547z5u\" data-start=\"4031\" data-end=\"4061\"\u003eInstallation \u0026amp; Service Notes\u003c\/h1\u003e\n\u003cul data-start=\"4063\" data-end=\"4660\"\u003e\n\u003cli data-section-id=\"iv93qe\" data-start=\"4063\" data-end=\"4127\"\u003eShut down the pressure washer and relieve all system pressure.\u003c\/li\u003e\n\u003cli data-section-id=\"1me0y3q\" data-start=\"4128\" data-end=\"4178\"\u003eDisconnect the engine or motor before servicing.\u003c\/li\u003e\n\u003cli data-section-id=\"t7t12y\" data-start=\"4179\" data-end=\"4336\"\u003eVerify compatibility with the 24 mm shaft, 1-1\/2\" shaft length, right-hand rotation, mounting configuration, pulley alignment, and horsepower requirements.\u003c\/li\u003e\n\u003cli data-section-id=\"rdentd\" data-start=\"4337\" data-end=\"4403\"\u003eInstall the pump according to the manufacturer's specifications.\u003c\/li\u003e\n\u003cli data-section-id=\"n0r99j\" data-start=\"4404\" data-end=\"4484\"\u003eFill the crankcase with the recommended pump oil before operation if required.\u003c\/li\u003e\n\u003cli data-section-id=\"tt60ox\" data-start=\"4485\" data-end=\"4548\"\u003eConnect the water inlet and high-pressure discharge plumbing.\u003c\/li\u003e\n\u003cli data-section-id=\"z9jstr\" data-start=\"4549\" data-end=\"4592\"\u003ePrime the pump with water before startup.\u003c\/li\u003e\n\u003cli data-section-id=\"2i5ge8\" data-start=\"4593\" data-end=\"4660\"\u003eVerify proper operation and inspect for leaks after installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4662\" data-end=\"4848\"\u003e\u003cstrong data-start=\"4662\" data-end=\"4676\"\u003eImportant:\u003c\/strong\u003e Never operate the pump without an adequate water supply. Running the pump dry can quickly damage the plungers, seals, and valves, significantly reducing pump service life.\u003c\/p\u003e\n\u003chr data-start=\"4850\" data-end=\"4853\"\u003e\n\u003ch1 data-section-id=\"16tfrdt\" data-start=\"4855\" data-end=\"4884\"\u003eMaintenance Recommendations\u003c\/h1\u003e\n\u003cul data-start=\"4886\" data-end=\"5326\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"1vweevh\" data-start=\"4886\" data-end=\"4980\"\u003eCheck the pump oil level regularly and change the oil according to AR maintenance intervals.\u003c\/li\u003e\n\u003cli data-section-id=\"1hpvhte\" data-start=\"4981\" data-end=\"5052\"\u003eInspect packings, seals, valves, and fittings during routine service.\u003c\/li\u003e\n\u003cli data-section-id=\"102oikd\" data-start=\"5053\" data-end=\"5118\"\u003eMaintain clean, filtered inlet water to minimize internal wear.\u003c\/li\u003e\n\u003cli data-section-id=\"fwxuhd\" data-start=\"5119\" data-end=\"5189\"\u003eCheck belt alignment and tension periodically on belt-drive systems.\u003c\/li\u003e\n\u003cli data-section-id=\"11kk9ns\" data-start=\"5190\" data-end=\"5326\" data-is-last-node=\"\"\u003eUse only genuine OEM AR replacement parts and approved lubricants to maintain optimum performance, reliability, and long service life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Annovi Reverberi","offers":[{"title":"Default Title","offer_id":53443983442283,"sku":null,"price":710.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/AnnoviReverberi-logo_b947d9a0-0d3e-4103-8b4e-28a75b563aa3.png?v=1782881537","url":"https:\/\/generalsprayers.com\/products\/ar-rka4g40hn-l-pressure-washer-pump-4-0-gpm-4000-psi-24mm-long-shaft-1-1-2-right-hand","provider":"GeneralSprayers","version":"1.0","type":"link"}