{"product_id":"21860003-idler-gear-genuine-volvo-penta","title":"21860003 Idler Gear | Genuine Volvo Penta Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n A genuine timing-gear idler used in the engine gear train on Volvo Penta D8 and selected TAD5 engines. It transfers rotation between the crankshaft, camshaft and auxiliary gears.\n\u003c\/p\u003e\n\u003ch2\u003e\n 🚤 Compatibility\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  \u003cstrong\u003e\n   Engine Family:\n  \u003c\/strong\u003e\n  TAD, D, TADH\n \u003c\/li\u003e\n \u003cli\u003e\n  \u003cstrong\u003e\n   HP Range:\n  \u003c\/strong\u003e\n  Approximately 225-650 HP\n \u003c\/li\u003e\n \u003cli\u003e\n  \u003cstrong\u003e\n   Year Range:\n  \u003c\/strong\u003e\n  Approximately 2010 - current supported applications\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\n Full model list at the end of this description.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚙️ Key Features\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Timing-gear idler for the engine gear train\n \u003c\/li\u003e\n \u003cli\u003e\n  0.581 kg\n \u003c\/li\u003e\n \u003cli\u003e\n  Listed for 26 applications across the TAD, D and TADH ranges\n \u003c\/li\u003e\n \u003cli\u003e\n  Transfers rotation between the crankshaft, camshaft and auxiliary gears\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n Sits between the driving and driven gears in the timing train, passing rotation across the gap and holding the timing relationship between crankshaft, camshaft and the auxiliary drives.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Whine or growl from the timing end that rises with engine speed\n \u003c\/li\u003e\n \u003cli\u003e\n  Rattle at idle that quietens as revs come up\n \u003c\/li\u003e\n \u003cli\u003e\n  Metallic glitter in the oil or on the drain plug\n \u003c\/li\u003e\n \u003cli\u003e\n  Teeth pitted, chipped or with a wear step across the face on strip-down\n \u003c\/li\u003e\n \u003cli\u003e\n  Bearing or bush worn, giving perceptible rock on the shaft\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🛠️ Service Notes\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Idler gear 21860076 is the heavier gear in the same train at 1.844 kg - check which position is being replaced before ordering\n \u003c\/li\u003e\n \u003cli\u003e\n  Inspect the mating gears and the idler shaft at the same time; a failed idler leaves its wear pattern on both\n \u003c\/li\u003e\n \u003cli\u003e\n  Renew the bush or bearing hardware with the gear where the assembly is built that way\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/h2\u003e\n\u003ch3\u003e\n OEM \/ Related Numbers\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  21736275 - idler-gear hub\n \u003c\/li\u003e\n \u003cli\u003e\n  976042 - O-ring\n \u003c\/li\u003e\n \u003cli\u003e\n  21736279 - retaining plate\n \u003c\/li\u003e\n \u003cli\u003e\n  964106 - gasket\n \u003c\/li\u003e\n \u003cli\u003e\n  21735434 - related drive gear\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 📦 Condition\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine Volvo Penta part\n \u003c\/li\u003e\n \u003cli\u003e\n  Brand new\n \u003c\/li\u003e\n \u003cli\u003e\n  Supplied in original or equivalent packaging\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔎 Full Model Compatibility\n\u003c\/h2\u003e\n\u003cp\u003e\n Typically suits:\n\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Volvo Penta D8A2-A MP, D8A5-A MH, D8A6-A MH, D8A5-A MG, D8A6-A MG, D8A4-A MP, D8A1-A MP, D8A3-A MP\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAD840GE, TAD840-43VE, TAD840GE-B\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAD570-72VE, TAD570-71VE-B\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAD880-82GE, TAD880-84VE\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TADH880-82GE, TADH880-84VE\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAD540-42VE\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAD550-51VE\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAD552VE\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAD580-83VE\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAD841-43GE\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAD850-52VE\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAD851-53GE\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAD853VE\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TAD870-73VE\n \u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Volvo Penta","offers":[{"title":"Default Title","offer_id":53385638215972,"sku":"6881430","price":414.29,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_66433a2a-56fe-4e2a-849b-8da62a5dbc7f.png?v=1788061565","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/21860003-idler-gear-genuine-volvo-penta","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}