{"product_id":"21839149-pulley-genuine-volvo-penta","title":"21839149 Pulley | Genuine Volvo Penta Part","description":"\u003ch2\u003e🔧 Product Description\u003c\/h2\u003e\u003cp\u003eFactory belt-drive pulley supplied as the later replacement for Volvo Penta pulley 20509134. Its groove profile, offset and mounting geometry maintain correct belt alignment.\u003c\/p\u003e\u003ch2\u003e⚙️ Key Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFactory groove profile\u003c\/li\u003e\n\u003cli\u003eCorrect pulley offset\u003c\/li\u003e\n\u003cli\u003eMaintains accessory-belt alignment\u003c\/li\u003e\n\u003cli\u003eSupersedes 20509134\u003c\/li\u003e\n\u003cli\u003eUse with the specified belt and hub hardware\u003c\/li\u003e\n\u003cli\u003eEngine type: Volvo Penta diesel engine\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e🔌 Function\u003c\/h2\u003e\u003cp\u003eTransfers crankshaft or accessory-drive rotation through the belt while maintaining the required speed ratio and belt tracking.\u003c\/p\u003e\u003ch2\u003e⚠️ Common Signs of Failure\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBelt running off-centre\u003c\/li\u003e\n\u003cli\u003eWorn or damaged grooves\u003c\/li\u003e\n\u003cli\u003eVisible wobble or run-out\u003c\/li\u003e\n\u003cli\u003eRepeated belt fraying\u003c\/li\u003e\n\u003cli\u003eLoose or damaged mounting bore\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e🛠️ Service Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eInspect the belt running surfaces before fitting — a pulley with glazed, scored, pitted or rust-roughened grooves will chew through a new belt in very little running time\u003c\/li\u003e\n\u003cli\u003eCheck that the pulley runs true and that its bearing or bush turns smoothly with no roughness or side play; fit a new belt whenever a pulley is changed\u003c\/li\u003e\n\u003cli\u003eConfirm that every pulley in the drive lies in the same plane and that the belt profile matches each groove — misalignment shows up as belt dust, squeal or a worn belt edge and will destroy a new belt quickly\u003c\/li\u003e\n\u003cli\u003eFit onto a clean, dry, burr-free shaft or hub face and tighten the retaining fasteners in the sequence and to the figures given in the workshop manual for your engine\u003c\/li\u003e\n\u003cli\u003eTurn the engine over by hand before starting to confirm the belt is fully seated in every groove and that nothing fouls, then recheck belt tension after the first running period\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e🔄 Supersession \u0026amp; Cross Reference\u003c\/h2\u003e\u003ch3\u003eOEM Supersession Chain\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e21839149 → Supersedes 20509134\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eOEM \/ Related Numbers\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e20509134 earlier number superseded by this part\u003c\/li\u003e\n\u003cli\u003e3801619 related reference\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e📦 Condition\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGenuine Volvo Penta part\u003c\/li\u003e\n\u003cli\u003eBrand new\u003c\/li\u003e\n\u003cli\u003eSupplied in original or equivalent packaging\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Volvo Penta","offers":[{"title":"Default Title","offer_id":53385566945572,"sku":"6113222","price":835.2,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_a4d3e50c-40af-4a96-9274-940f42de205b.jpg?v=1788061985","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/21839149-pulley-genuine-volvo-penta","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}