{"product_id":"a-b1421409ma-ai-idler-pulley-kit-13","title":"A-B1421409MA-AI IDLER PULLEY KIT #13","description":"\u003ch3\u003eOne New Aftermarket Replacement Flat Idler Pulley Kit #13 for Murray Lawn Tractors\u003c\/h3\u003e\u003cp\u003eThis flat backside idler pulley serves as the engine-to-transmission drive idler on Murray lawn tractors equipped with 38-inch cutting decks. Made from composite glass-filled nylon, it maintains proper belt tension in the motion drive system and is a direct aftermarket replacement for Murray OEM part number 421409MA (also sold under the Fits Briggs and Stratton (B\u0026amp;S) parts program). The \"Kit #13\" designation is the Murray\/Fits Briggs and Stratton catalog classification for this pulley application.\u003c\/p\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e  \u003cli\u003eType: Flat\/Backside Idler Pulley\u003c\/li\u003e  \u003cli\u003eMaterial: Composite (glass-filled nylon)\u003c\/li\u003e  \u003cli\u003eOuter Diameter (A): 3-23\/64\" (approx. 3.33\")\u003c\/li\u003e  \u003cli\u003eRim Diameter (B): 2-3\/4\"\u003c\/li\u003e  \u003cli\u003eBore (C): 1\/2\"\u003c\/li\u003e  \u003cli\u003eOverall Width (D): 7\/8\"\u003c\/li\u003e  \u003cli\u003eOffset (E\/F): 1\/4\"\u003c\/li\u003e  \u003cli\u003eApplication: Engine-to-transmission idler, motion drive system\u003c\/li\u003e  \u003cli\u003eFits: 38\" deck, 12 HP lawn tractors (1987-1993)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatible Models\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eMurray 38\" Lawn Tractors (1987-1993):\u003c\/strong\u003e 31621x70G, 31720x11B, 31720x11C, 31720x20E, 31720x51A, 31720x51B, 31720x51C, 31721x88A, 31722x95A, 38500A, 38500B, 38500x192A, 38500x192B, 38500x30A, 38500x83A, 38500x92A, 38500x92B, 38501x50A, 38501x50B, 38502x51A, 38502x51B, 38502x66A, 38502x67A, 38502x98A, 38504A, 38504x25A, 38506x199A, 38506x4A, 38510x50A, 38510x59A, 38514x95A, 38515x83A, 38515x92A, 38515x92B, 38516x29A, 38516x52A, 38602x66F, 38602x70H, 38602x70J, 38623x5C, 38623x5D, 38632x66B, 38633x92A, 38633x92B, 38702x20D, 38702x20E, 38702x7A, 38702x7B, 38702x8D, 38702x8E, 38705A, 38705x30A, 38705x5A, 38705x5B, 38706A, 38706x99A, 38706x99B, 38710A, 38711x20A, 38711x29A, 38711x52A, 38711x66A, 38711x67A, 38711x73A, 38711x96A, 38712x53A, 38712x66A, 40507x8B, 40627X92C, 42813x92A\u003c\/p\u003e\u003cp\u003eAlso Fits Briggs and Stratton (B\u0026amp;S) \/ Murray branded equipment sold under the Sears, Fits Craftsman, Ranch King, and Scotts labels using the same motion drive idler application.\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003e421409MA, 421409MA-A, 421409, 421409-A, 091179MA, 091179MA-A, 91179, 91179-A, B1421409MA, B1421409MA-AI\u003c\/p\u003e\u003ch4\u003eAftermarket Interchange Numbers\u003c\/h4\u003e\u003cp\u003eOregon 34-826, Oregon 78-027, Fits Stens 280-499, 280-499-A, Rotary 7978, Prime Line 7-05338, Laser 95515, Countrax 20811500, Murray 300920, Murray 40223\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":40540926083155,"sku":"A-B1421409MA-AI","price":26.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/4060\/3955\/files\/RAP_ComingSoon_Tractor_d74b923c-1e19-43a4-bc28-5a887260368f.jpg?v=1757740915","url":"https:\/\/www.reliableaftermarketparts.com\/products\/a-b1421409ma-ai-idler-pulley-kit-13","provider":"Reliable Aftermarket Parts, Inc®","version":"1.0","type":"link"}