{"product_id":"lennox-73m85-genuine-oem-direct-drive-blower-motor-bracket-kit-48-frame-lb-108026a","title":"Lennox 73M85 – Genuine OEM Direct Drive Blower Motor Bracket Kit (48 Frame, LB-108026A)","description":"\u003ch1\u003eLennox 73M85 – Genuine OEM Direct Drive Blower Motor Bracket Kit (48 Frame, LB-108026A)\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eLennox 73M85\u003c\/strong\u003e (Model \u003cstrong\u003eLB-108026A\u003c\/strong\u003e) is a high-strength \u003cstrong\u003eGenuine OEM Direct Drive Blower Motor Bracket Kit\u003c\/strong\u003e designed for Lennox and Armstrong Air furnaces and air handlers. This \"Torsion Flex\" mounting system is engineered to suspend 48-frame blower motors within the scroll housing, providing a secure, vibration-isolated connection that ensures quiet airflow and long motor life.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical Performance:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis kit is specifically designed for motors with a \u003cstrong\u003e2.5-inch mounting ring diameter\u003c\/strong\u003e and features a \u003cstrong\u003e7.06-inch on-center\u003c\/strong\u003e spacing for the mounting arms. Built from heavy-duty plated steel, the \u003cstrong\u003e73M85\u003c\/strong\u003e provides the structural rigidity necessary to handle the high torque of modern 1\/2 HP and 3\/4 HP blower motors. The flex-arm design acts as a mechanical harmonic filter, absorbing the micro-vibrations generated by the motor to prevent \"drone\" or cabinet rattle.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features and Function:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 1: Torsion Flex Isolation:\u003c\/strong\u003e Reduces mechanical noise by absorbing motor torque oscillations before they reach the furnace cabinet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 2: Precision 48-Frame Fit:\u003c\/strong\u003e Engineered specifically for standard 5.5-inch diameter (48 frame) motors with 2.5-inch resilient mounting rings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 3: Corrosion-Resistant Plating:\u003c\/strong\u003e Treated to withstand the high-humidity environment common in cooling and high-efficiency heating cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 4: High-Torque Support:\u003c\/strong\u003e Reinforced arm geometry prevents motor \"sag\" or misalignment, ensuring the blower wheel stays perfectly centered.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details and Key Specifications:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog Number:\u003c\/strong\u003e 73M85\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel\/Part Number:\u003c\/strong\u003e LB-108026A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Lennox \/ Allied Air (Genuine OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Frame Size:\u003c\/strong\u003e 48 Frame (5.5\" Motor Diameter)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Ring Diameter:\u003c\/strong\u003e 2.5 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn-Center Spacing:\u003c\/strong\u003e 7.06 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e (3) Mounting Arms, (1) Hub Ring, (3) Rubber Isolation Grommets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 1.8 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🛠️ \u003cstrong\u003eHVAC Depot Pro Tip: The \"Rubber Grommet\" Rule\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003eNever over-tighten the mounting bolts on the 73M85 bracket. The rubber isolation grommets included in this kit are designed to be snug, not crushed. If you compress them until they are flat, they lose their ability to absorb vibration, and the motor noise will be transmitted directly into the ductwork throughout the entire house.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference \u0026amp; Compatibility:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e73M85\u003c\/strong\u003e is a direct OEM replacement for the following part numbers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Numbers:\u003c\/strong\u003e 73M8501, LB-108026A, LB108026A, 100441-01\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLennox Refs:\u003c\/strong\u003e 603954-10, 68K66 (Mounting Component)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eExtensive Model Compatibility List:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLennox G40 Series:\u003c\/strong\u003e G40UH-24A-045, G40UH-36B-070, G40UH-48B-090, G40UH-60C-110\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLennox G51 Series:\u003c\/strong\u003e G51MP-36B-070, G51MP-48C-090, G51MP-60D-135\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLennox G61 Series:\u003c\/strong\u003e G61MPV-36B-070, G61MPV-60C-090\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLennox CBX Series:\u003c\/strong\u003e CBX27UH, CBX32MV Air Handlers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArmstrong Air:\u003c\/strong\u003e G1N80, G1D80, G1D91, G1D93 series furnaces\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":52451505471851,"sku":"66255135659","price":189.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/original_9ace00b4-98d9-4be0-a50c-ffa75d010da5.png?v=1760124303","url":"https:\/\/tophvacparts.com\/products\/lennox-73m85-genuine-oem-direct-drive-blower-motor-bracket-kit-48-frame-lb-108026a","provider":"HVAC Parts and Equipment Depot","version":"1.0","type":"link"}