{"product_id":"t172543-pve-spur-gear-57t-2nd-idler-ring","title":"T172543 Spur Gear 57T, 2nd Idler Ring Fits 450J s\/n 108452-, 450K s\/n F304771-","description":"\u003ch3\u003eOne New Aftermarket Replacement Spur Gear, 2nd Idler Ring (57T) Fits John Deere Crawler Dozers\u003c\/h3\u003e\u003cp\u003eThis 57-tooth spur gear serves as the 2nd idler ring in the final drive assembly of Fits John Deere J-series and K-series crawler dozers. The final drive idler gear train transmits power from the transmission output to the drive sprocket; worn or broken idler ring gears cause loss of drive power and must be replaced to restore full dozer function. This gear applies to serial-number-restricted builds only - verify your machine serial number before ordering.\u003c\/p\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNumber of Teeth: 57T\u003c\/li\u003e\n\u003cli\u003ePosition: 2nd Idler Ring, Final Drive Gear Train\u003c\/li\u003e\n\u003cli\u003eMachine Type: Crawler Dozer\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatible Models\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eFits John Deere J-Series Crawler Dozer:\u003c\/strong\u003e 450J (s\/n 108452 and above)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFits John Deere K-Series Crawler Dozer:\u003c\/strong\u003e 450K (s\/n F304771 and above)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSerial Number Notice:\u003c\/strong\u003e This gear fits the 450J after s\/n 108452 and the 450K after s\/n F304771. These serial number restrictions are critical - do not order for machines with earlier serial numbers, as a different gear design was used.\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003eT172543\u003c\/p\u003e\u003cp\u003eNew aftermarket replacement part - not remanufactured, not used.\u003c\/p\u003e","brand":"Reliable Aftermarket Parts, Inc® -OD","offers":[{"title":"Default Title","offer_id":32312063656019,"sku":"T172543-PVE","price":1230.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/4060\/3955\/files\/T172543-PVE_01.jpg?v=1758091358","url":"https:\/\/www.reliableaftermarketparts.co.uk\/products\/t172543-pve-spur-gear-57t-2nd-idler-ring","provider":"Reliable Aftermarket Parts, Inc®","version":"1.0","type":"link"}