{"product_id":"husqvarna-574870901-3400-hydro-belt-genuine-oem-replacement-drive-belt","title":"Husqvarna 574870901 3400 Hydro Belt – Genuine OEM Replacement Drive Belt","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\"\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\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-8 [--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 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 dir=\"auto\" 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\" 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\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 574870901\u003cbr\u003e\u003cstrong\u003eCategory:\u003c\/strong\u003e Zero-Turn Mower Replacement Parts \u0026amp; Hydrostatic Drive Components\u003cbr\u003e\u003cstrong\u003eType:\u003c\/strong\u003e 3400 Hydro Belt – Genuine OEM Replacement Drive Belt\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003eThe \u003cstrong\u003eHusqvarna 574870901 3400 Hydro Belt\u003c\/strong\u003e is a genuine OEM replacement drive belt designed for select \u003cstrong\u003eHusqvarna zero-turn mowers, riding mowers, and compatible hydrostatic drive systems\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 574870901\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Husqvarna\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Hydrostatic Drive Belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory Designation:\u003c\/strong\u003e Belt, Hydro, 3400\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternate Description:\u003c\/strong\u003e Hydro Belt \/ Hydro Drive Belt \/ Ground Drive Belt \/ Transmission Drive Belt \/ Zero-Turn Drive Belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent Type:\u003c\/strong\u003e Drivetrain \/ Hydrostatic Transmission Component\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Application:\u003c\/strong\u003e Lawn \u0026amp; Garden Equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Equipment Types:\u003c\/strong\u003e Zero-Turn Mowers \/ Riding Mowers – Model Dependent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKnown Equipment Families:\u003c\/strong\u003e Husqvarna MZ \/ M-ZT Series and Related Equipment – Model Dependent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Hydrostatic Ground Drive \/ Transmission System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Transfers Engine Power to the Applicable Hydrostatic Transmission Drive System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Location:\u003c\/strong\u003e Engine \/ Hydro Transmission Drive System – Model Dependent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssociated Components:\u003c\/strong\u003e Engine Pulley \/ Hydro Transmission Pulleys \/ Idler Pulleys \/ Idler Arm \/ Tensioning Components \/ Belt Guides\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory Application Designation:\u003c\/strong\u003e 3400\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement Type:\u003c\/strong\u003e Direct OEM Replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Status:\u003c\/strong\u003e Genuine Husqvarna OEM Part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 Hydro Drive Belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number Reference:\u003c\/strong\u003e 574870901\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternate Number Format:\u003c\/strong\u003e 574 87 09-01 \/ 5748709-01\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFeatures \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine \u003cstrong\u003eHusqvarna OEM\u003c\/strong\u003e replacement hydro drive belt\u003c\/li\u003e\n\u003cli\u003eFactory-designated \u003cstrong\u003eBelt, Hydro, 3400\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDesigned for compatible Husqvarna hydrostatic drive systems\u003c\/li\u003e\n\u003cli\u003eUsed on select Husqvarna \u003cstrong\u003eMZ and M-ZT zero-turn mower configurations\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eReplaces the applicable original equipment hydro transmission belt\u003c\/li\u003e\n\u003cli\u003eTransfers engine power to the mower's hydrostatic drivetrain\u003c\/li\u003e\n\u003cli\u003eHelps maintain consistent power delivery to the transmission system\u003c\/li\u003e\n\u003cli\u003eSupports proper mower propulsion and ground-drive operation\u003c\/li\u003e\n\u003cli\u003eApplication-specific belt profile, length, construction, and fit\u003c\/li\u003e\n\u003cli\u003eDesigned to follow the intended factory pulley routing\u003c\/li\u003e\n\u003cli\u003eInterfaces with applicable OEM engine, hydro, and idler pulleys\u003c\/li\u003e\n\u003cli\u003eHelps restore drive performance when replacing a worn or slipping belt\u003c\/li\u003e\n\u003cli\u003eSuitable for replacing cracked, glazed, frayed, stretched, burned, damaged, or broken belts\u003c\/li\u003e\n\u003cli\u003eUseful for hydrostatic drivetrain repair and preventative maintenance\u003c\/li\u003e\n\u003cli\u003eDirect replacement for equipment specifying \u003cstrong\u003e574870901\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSold individually\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eHydro Drive Belt Function \u0026amp; Importance\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e574870901 Hydro Belt\u003c\/strong\u003e forms part of the power-transmission system responsible for propelling compatible Husqvarna zero-turn and riding mowers.\u003c\/p\u003e\n\u003cp\u003eA simplified hydrostatic drive arrangement can be represented as:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEngine Drive Pulley → 574870901 Hydro Belt → Idler \/ Tensioning System → Hydro Transmission Pulley(s) → Hydrostatic Drive System → Drive Wheels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAs the engine operates, the belt transfers rotational power from the engine pulley to the applicable hydrostatic transmission system. The transmissions then convert and regulate this power to produce mower movement according to operator control input.\u003c\/p\u003e\n\u003cp\u003eProper hydro belt operation helps provide:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEfficient drivetrain power transfer\u003c\/li\u003e\n\u003cli\u003eConsistent mower propulsion\u003c\/li\u003e\n\u003cli\u003eProper operation of the hydrostatic transmissions\u003c\/li\u003e\n\u003cli\u003eSmooth forward and reverse response\u003c\/li\u003e\n\u003cli\u003eReliable interaction with the transmission drive pulleys\u003c\/li\u003e\n\u003cli\u003eCorrect operation of associated idlers and tensioning components\u003c\/li\u003e\n\u003cli\u003eMaintenance of the intended factory drivetrain configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA worn or damaged hydro belt may contribute to \u003cstrong\u003eslipping, squealing, hesitation, reduced ground speed, weak propulsion, inconsistent drive response, difficulty moving under load, repeated belt derailment, or complete loss of ground drive\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eBecause similar symptoms can also result from \u003cstrong\u003ehydrostatic transmission problems, damaged pulleys, worn idlers, incorrect belt tension, or other drivetrain issues\u003c\/strong\u003e, the complete drive system should be inspected when diagnosing propulsion problems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eReplacement, Inspection \u0026amp; Installation\u003c\/h2\u003e\n\u003cp\u003eReplacement of the \u003cstrong\u003eHusqvarna 574870901 3400 Hydro Belt\u003c\/strong\u003e may be appropriate if the original has:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDeveloped visible cracks\u003c\/li\u003e\n\u003cli\u003eBecome brittle or hardened\u003c\/li\u003e\n\u003cli\u003eDeveloped shiny or glazed sidewalls\u003c\/li\u003e\n\u003cli\u003eShows burned or overheated areas\u003c\/li\u003e\n\u003cli\u003eDeveloped frayed or damaged edges\u003c\/li\u003e\n\u003cli\u003eBecome stretched or excessively loose\u003c\/li\u003e\n\u003cli\u003eSlips during equipment operation\u003c\/li\u003e\n\u003cli\u003eRepeatedly comes off the pulley system\u003c\/li\u003e\n\u003cli\u003eSustained cuts or other physical damage\u003c\/li\u003e\n\u003cli\u003eBroken completely\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen replacing the belt, inspect the surrounding \u003cstrong\u003eengine pulley, hydro transmission pulleys, idler pulleys, idler arm, tensioning mechanism, springs, belt guides, pulley bearings, and mounting hardware\u003c\/strong\u003e for wear or damage.\u003c\/p\u003e\n\u003cp\u003eBefore beginning service, park the mower on a stable, level surface, disengage the cutting system, set the parking brake, shut off the engine, remove the ignition key, allow all moving components to stop, and prevent accidental starting or unintended movement.\u003c\/p\u003e\n\u003cp\u003eBefore removing the original belt, note or photograph the exact \u003cstrong\u003ebelt routing, pulley arrangement, idler position, belt-guide locations, and tensioning configuration\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eInstall the replacement \u003cstrong\u003e574870901 Hydro Belt\u003c\/strong\u003e according to the applicable OEM belt-routing diagram. Verify that the belt is properly seated in each pulley groove and correctly routed around all applicable idlers and guides.\u003c\/p\u003e\n\u003cp\u003eAfter installation, verify proper belt alignment and tension and confirm that the drivetrain responds correctly to forward and reverse control inputs before returning the mower to normal operation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eFitment \u0026amp; Important Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify compatibility with your exact \u003cstrong\u003eHusqvarna mower model, product number, serial number, hydrostatic transmission configuration, and production revision\u003c\/strong\u003e before ordering.\u003c\/li\u003e\n\u003cli\u003eMatch \u003cstrong\u003epart number 574870901\u003c\/strong\u003e directly with the applicable OEM parts documentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e574870901\u003c\/strong\u003e is identified as \u003cstrong\u003eBelt, Hydro, 3400\u003c\/strong\u003e for applicable Husqvarna equipment.\u003c\/li\u003e\n\u003cli\u003eKnown applications include select \u003cstrong\u003eHusqvarna MZ48, MZ52, MZ54, MZ61, MZ6128, M-ZT52, M-ZT61, and related zero-turn mower configurations\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eFitment varies by specific product number and production revision even within the same mower family.\u003c\/li\u003e\n\u003cli\u003eThe \u003cstrong\u003e“3400” designation is a factory\/application reference\u003c\/strong\u003e and should not be treated as a belt dimension.\u003c\/li\u003e\n\u003cli\u003eDo not assume every Husqvarna MZ, M-ZT, riding mower, or zero-turn mower uses \u003cstrong\u003e574870901\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThis is a \u003cstrong\u003ehydro\/ground-drive belt\u003c\/strong\u003e on applicable equipment and should not be confused with the mower deck blade-drive belt.\u003c\/li\u003e\n\u003cli\u003eThe exact belt length, width, profile, construction, and routing are equipment dependent.\u003c\/li\u003e\n\u003cli\u003eSimilar-looking belts can differ in \u003cstrong\u003elength, width, sidewall profile, construction, load characteristics, and drivetrain compatibility\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDo not select a replacement belt solely by approximate dimensions or visual appearance.\u003c\/li\u003e\n\u003cli\u003eUse \u003cstrong\u003e574870901\u003c\/strong\u003e as the primary OEM fitment reference.\u003c\/li\u003e\n\u003cli\u003eInspect all idler and transmission pulleys for \u003cstrong\u003erough bearings, excessive play, damaged grooves, misalignment, or debris buildup\u003c\/strong\u003e when replacing the belt.\u003c\/li\u003e\n\u003cli\u003eInspect the idler arm and tensioning components if the previous belt repeatedly slipped or came off.\u003c\/li\u003e\n\u003cli\u003eA seized pulley, worn bearing, damaged tensioning component, or incorrect routing can cause premature failure of a new hydro belt.\u003c\/li\u003e\n\u003cli\u003eKeep oil, grease, hydraulic fluid, fuel, and other contaminants away from the belt and pulley surfaces.\u003c\/li\u003e\n\u003cli\u003eDo not cut, stretch, splice, grind, reshape, or otherwise modify the replacement belt to force fitment.\u003c\/li\u003e\n\u003cli\u003eThis listing is for \u003cstrong\u003eone Husqvarna 574870901 3400 Hydro Belt only\u003c\/strong\u003e unless otherwise specified. Pulleys, idlers, tensioning components, hydro transmissions, and other associated drivetrain parts are sold separately unless explicitly included.\u003c\/li\u003e\n\u003cli\u003eMatch \u003cstrong\u003eHusqvarna 574870901\u003c\/strong\u003e with your mower's OEM parts documentation before ordering to ensure proper fitment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden has-[\u0026gt;_:empty]:hidden\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Husqvarna","offers":[{"title":"Default Title","offer_id":53786261356907,"sku":"574870901","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/574870901.jpg?v=1788184750","url":"https:\/\/generalsprayers.com\/products\/husqvarna-574870901-3400-hydro-belt-genuine-oem-replacement-drive-belt","provider":"GeneralSprayers","version":"1.0","type":"link"}