{"product_id":"stens-flat-idler-pulley-for-exmark-lazer-z-black-metal-direct-fit-8-3-4in-od-5-8in-id","title":"Stens Flat Idler Pulley for Exmark Lazer Z — Black Metal Direct-Fit, 8-3\/4in OD 5\/8in ID","description":"\u003cstrong\u003eStens 280-737 is a metal flat idler pulley engineered to replace Exmark Lazer Z idlers (OEM 109-8590, 116-9639) and restore proper belt routing and tension.\u003c\/strong\u003e\n\n\u003cp\u003eIf a worn or damaged idler pulley is causing belt slippage, noise, or poor mower performance, this Stens flat idler provides a direct-fit replacement designed for Exmark Lazer Z machines. Manufactured by an OEM supplier from corrosion-resistant metal, the idler matches the original outside diameter and center bore dimensions so installation is straightforward for technicians and DIYers.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this idler match original Exmark specifications?\u003c\/h3\u003e\n\u003cp\u003eThe Stens 280-737 reproduces the critical measurements needed for a correct fit. It has an outer diameter, inner diameter, and mounting height aligned to the original part so it seats and spins like the factory component.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOuter diameter (OD): 8 3\/4\" for consistent belt contact.\u003c\/li\u003e\n  \u003cli\u003eInner diameter (ID): 5\/8\" to fit standard shafts and bolts.\u003c\/li\u003e\n  \u003cli\u003eHeight and flange dimensions: 1\" height and 1\/4\" flange detail for correct clearance.\u003c\/li\u003e\n  \u003cli\u003eOverall depth\/value V: 1 5\/8\" for belt alignment with pulleys.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this idler install easily on my Lazer Z mower?\u003c\/h3\u003e\n\u003cp\u003eYes — the idler is designed to be a compatible replacement for Exmark part numbers 109-8590 and 116-9639, so it installs in the same mounting location without modification when your mower uses those OEM references. Typical installation requires basic hand tools and standard safety precautions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-replacement for Exmark Lazer Z models listed under OEM numbers.\u003c\/li\u003e\n  \u003cli\u003eFits common 5\/8\" shafts\/bolts used on Exmark idler mounts.\u003c\/li\u003e\n  \u003cli\u003ePackage contains one unit sized for original belt routing and tension.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the material and durability features to expect?\u003c\/h3\u003e\n\u003cp\u003eThe pulley is metal-bodied to withstand loads and resist deformation under belt tension. Built by an experienced OEM supplier, it’s intended to offer reliable service life when installed and maintained correctly, but like all wear components it should be inspected periodically.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConstructed from metal for strength and consistent shape retention.\u003c\/li\u003e\n  \u003cli\u003eSuitable for typical lawn-mower operating loads and belt tensions.\u003c\/li\u003e\n  \u003cli\u003ePackaged individually with dimensions and weight that reflect a robust component.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I confirm this part fits my mower before ordering?\u003c\/h3\u003e\n\u003cp\u003eVerify the Exmark OEM numbers on your existing idler or consult your mower’s parts diagram to confirm compatibility with 109-8590 or 116-9639. If dimensions or reference numbers differ, compare mounting bolt size and pulley diameters before purchase to avoid mismatches.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCheck your mower’s parts list for Exmark 109-8590 or 116-9639.\u003c\/li\u003e\n  \u003cli\u003eMeasure present idler: 8 3\/4\" OD and 5\/8\" ID to match this item.\u003c\/li\u003e\n  \u003cli\u003eConfirm mounting bolt diameter and clearance match the 1\" height and 1\/4\" flange.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Technicians, landscapers, or homeowners who maintain Exmark Lazer Z zero-turn mowers and need a dependable, OEM-compatible flat idler to restore correct belt tracking. Choose the Stens 280-737 when you require a metal, dimensionally accurate replacement for Exmark part numbers 109-8590 and 116-9639 and want a straightforward swap with common tools.\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: Does this replace Exmark part 109-8590?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The Stens 280-737 is a compatible replacement for Exmark OEM 109-8590 and 116-9639.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What shaft size does the idler use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The idler is made for a 5\/8\" inner diameter shaft or bolt.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Stens","offers":[{"title":"Default Title","offer_id":56840862499156,"sku":"B095CYM28N","price":115.12,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/stens-flat-idler-front-view_07ff2d25-6d0d-4d95-b354-c914fac956ce.jpg?v=1787073597","url":"https:\/\/gardenluxe.co.uk\/products\/stens-flat-idler-pulley-for-exmark-lazer-z-black-metal-direct-fit-8-3-4in-od-5-8in-id","provider":"Gardenluxe Uk","version":"1.0","type":"link"}