{"product_id":"udc-parts-idler-pulley-for-craftsman-husqvarna-poulan-mowers-3-7-8-od-direct-fit-replacement-131494-173437","title":"UDC Parts idler pulley for Craftsman, Husqvarna \u0026 Poulan mowers — 3-7\/8\" OD, direct-fit replacement (131494 \/ 173437)","description":"\u003cp\u003e\u003cstrong\u003eUDC Parts 131494 idler pulley is a direct-fit replacement for Craftsman, Husqvarna and Poulan mower models that restores belt routing and reduces friction for smoother deck operation.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis replacement idler pulley is built to match OEM fit and dimensions, so you can swap it into compatible lawn tractor and mower models without major modification. Constructed to the specs listed—1-1\/8\" height, 3-7\/8\" outer diameter and 3\/8\" inner diameter—the pulley is intended to replace part numbers such as 173437, 131494 and related AYP\/Craftsman\/Husqvarna references. It targets improved belt tracking and lower resistance in the drive system to help you get back to mowing with minimal downtime.\u003c\/p\u003e\n\n\u003ch3\u003eWhich models and original part numbers does this pulley replace?\u003c\/h3\u003e\n\u003cp\u003eThis idler pulley is designed to be interchangeable with many OEM numbers from Craftsman, Husqvarna, Poulan and AYP. It covers the common part references and a long list of compatible mower and tractor model variants.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces OEM parts: 173437, 131494, 165888, 532104360, 532131494, 155191104360X, 532173437, 532165888.\u003c\/li\u003e\n  \u003cli\u003eCompatible Craftsman models: LT1000, LT2000 (specific serials 917.287050, 917.288070).\u003c\/li\u003e\n  \u003cli\u003eCompatible Husqvarna\/YTH\/LTH\/YTKH series models listed in product features.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do the pulley dimensions and design affect performance?\u003c\/h3\u003e\n\u003cp\u003eCorrect dimensions ensure the belt seats properly and maintains the designed belt path, which prevents slipping and uneven wear. The specified 3\/7\/8\" outer diameter and 3\/8\" bore match OEM geometry so the pulley runs concentrically on the spindle or bracket.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDimensions: 1-1\/8\" height, 3-7\/8\" OD, 3\/8\" ID—designed for precise belt alignment.\u003c\/li\u003e\n  \u003cli\u003eEngineered surfaces to reduce friction for smoother engagement and less heat buildup.\u003c\/li\u003e\n  \u003cli\u003eDirect-fit form minimizes installation time—no trimming or adapter required when matched to listed models.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should you check during installation to ensure a long service life?\u003c\/h3\u003e\n\u003cp\u003eProper installation extends component life and reduces repeat repairs. Inspect the belt condition, mounting hardware and bracket alignment before fitting the replacement pulley, and use the correct hardware torque values when available.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInspect belt for cracks, glazing, or frayed edges; replace the belt if worn.\u003c\/li\u003e\n  \u003cli\u003eClean mounting surfaces and remove rust or debris for true seating.\u003c\/li\u003e\n  \u003cli\u003eConfirm bracket alignment and secure fasteners to factory torque specifications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this pulley help reduce maintenance downtime?\u003c\/h3\u003e\n\u003cp\u003eA reliable idler pulley restores proper belt tension and routing quickly, so you can return the machine to operation without swapping multiple parts. Because it matches common OEM references, it’s often the single part needed to fix belt tracking or squeal issues tied to worn pulleys.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect replacement cuts troubleshooting time—fits many popular mower models.\u003c\/li\u003e\n  \u003cli\u003eDurable construction reduces need for near-term re-replacement under normal use.\u003c\/li\u003e\n  \u003cli\u003eSimplifies maintenance when combined with routine belt inspection and lubrication of pivots.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This replacement pulley is aimed at homeowners, landscapers and small engine technicians maintaining Craftsman, Husqvarna, Poulan or AYP riding mowers and tractors listed in the compatibility notes. If your mower shows signs of belt misalignment, squealing, or erratic deck engagement and the OEM part number matches the list above, this UDC Parts 131494 pulley provides a straightforward, dimension-matching swap to get your deck running properly again.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this pulley fit my Craftsman LT1000?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—UDC Parts 131494 fits Craftsman LT1000 and LT2000 where OEM part references match the list provided.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the pulley dimensions I should confirm?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Confirm 1-1\/8\" height, 3-7\/8\" outer diameter and 3\/8\" inner diameter before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"UDC Parts","offers":[{"title":"Default Title","offer_id":54193923752120,"sku":"B0CQ4XH7QY","price":49.38,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0636\/7416\/files\/udc-parts-131494-front-view.jpg?v=1790567628","url":"https:\/\/canadianlawn.ca\/products\/udc-parts-idler-pulley-for-craftsman-husqvarna-poulan-mowers-3-7-8-od-direct-fit-replacement-131494-173437","provider":"Canadian Lawn","version":"1.0","type":"link"}