{"product_id":"flynsu-brake-control-module-121-3017-direct-fit-replacement-for-exmark-toro-mowers-oem-compatible","title":"Flynsu Brake Control Module 121-3017 — Direct-fit Replacement for Exmark\/Toro Mowers, OEM-Compatible","description":"\u003cp\u003e\u003cstrong\u003eThe Flynsu 121-3017 Brake Control Module is a direct-fit replacement for specified Exmark\/Toro ride-on mower models, matching OE part numbers 121-3017 and 115-9660 to restore reliable brake control.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your Exmark or Toro mower is showing brake control faults or the original module has failed, this Flynsu replacement is engineered to match the original electrical and mounting specifications so you can get back to safe operation quickly. It’s intended as a like-for-like substitute for the factory unit and built to the same fit and connection pattern as the OEM part.\u003c\/p\u003e\n\n\u003ch3\u003eWhich mower models and serial ranges is this module compatible with?\u003c\/h3\u003e\n\u003cp\u003eThis replacement fits a specific set of Exmark Quest and QTS series machines within defined serial number windows. Confirming your mower’s serial number against the listed ranges ensures correct compatibility before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOE numbers: 121-3017 and 115-9660 for cross-reference.\u003c\/li\u003e\n  \u003cli\u003eCompatible with Quest QTE651KA421 and QTE691KA501 series (serials around 313000000–313999999).\u003c\/li\u003e\n  \u003cli\u003eCompatible with Quest QTE735KC421 and QTE735KC501 series (serials around 314000000–314999999).\u003c\/li\u003e\n  \u003cli\u003eCompatible with Quest QTS691KA422 and QTS691KA502 series within the serial ranges noted in product details.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what should I check before fitting?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for technicians familiar with mower electrical components; the Flynsu unit uses the same connector layout and mounting points as the original. Before installing, disconnect the battery and verify the serial number and OE part number to avoid misfit or electrical mismatches.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirm mower serial number matches the ranges included in the product description.\u003c\/li\u003e\n  \u003cli\u003eDisconnect battery power and follow manufacturer safety procedures.\u003c\/li\u003e\n  \u003cli\u003eCompare connector pins and mounting holes to the original module before tightening.\u003c\/li\u003e\n  \u003cli\u003eTest brake function after installation before full operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance and durability can I expect from this replacement module?\u003c\/h3\u003e\n\u003cp\u003eThe unit is manufactured to replicate the form, fit, and basic electrical function of the OEM control module so you get comparable brake response and system integration. While not a factory-branded component, it’s produced to meet the operational needs of the specified mower models under typical use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMatches OEM electrical connector configuration for plug-and-play installation.\u003c\/li\u003e\n  \u003cli\u003eDesigned to handle the same control signals and load as the OE unit.\u003c\/li\u003e\n  \u003cli\u003eFits original mounting points to avoid alterations to the mower chassis.\u003c\/li\u003e\n  \u003cli\u003eSuitable for routine lawncare and professional landscape maintenance tasks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre there any important notes about ordering and returns?\u003c\/h3\u003e\n\u003cp\u003eDouble-check the OE part number and your mower’s serial number before ordering to reduce exchanges. If the module doesn’t match your machine, follow the seller’s return policy for replacements or refunds and retain original packaging until compatibility is confirmed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse OE references 121-3017 and 115-9660 to verify compatibility.\u003c\/li\u003e\n  \u003cli\u003eKeep purchase documentation and original packaging for returns.\u003c\/li\u003e\n  \u003cli\u003eContact customer support with your mower serial number for pre-sale confirmation.\u003c\/li\u003e\n  \u003cli\u003eHave a qualified technician install electrical components if you’re unsure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This Flynsu 121-3017 Brake Control Module is aimed at owners and technicians of Exmark and Toro Quest\/QTS series mowers who need a reliable, direct-fit replacement for a failed brake control unit. It’s particularly useful for landscape professionals, commercial operators, and homeowners who prefer a like-for-like swap that preserves the mower’s original electrical layout and mounting configuration.\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 Flynsu module replace OE 121-3017?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This Flynsu unit is a direct replacement for OE part numbers 121-3017 and 115-9660.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do I confirm compatibility with my Exmark mower?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Check your mower serial number against the product’s listed serial ranges and verify the original part number before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Flynsu","offers":[{"title":"Default Title","offer_id":48082937053342,"sku":"B0DKS8J93T","price":53.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/flynsu-brake-module-front-view.jpg?v=1785819489","url":"https:\/\/northtrailauto.ca\/products\/flynsu-brake-control-module-121-3017-direct-fit-replacement-for-exmark-toro-mowers-oem-compatible","provider":"North Trail Auto","version":"1.0","type":"link"}