{"product_id":"5261322-genuine-cummins®-fan-support-for-isb-6-7-qsb-6-7","title":"5261322 | Genuine Cummins® Fan Support for ISB 6.7, QSB 6.7","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e Fan Support\u003cbr\u003e\u003cstrong\u003eCondition: \u003c\/strong\u003eNew\u003cbr\u003e\u003cstrong\u003eBrand: \u003c\/strong\u003eCummins®\u003cbr\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 5261322\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCummins® Engine Platforms:\u003c\/b\u003e ISB 6.7, QSB 6.7, and ISB6.7 CM2350 heavy-duty\/industrial diesel engines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCommercial \u0026amp; Vocational Trucks:\u003c\/b\u003e Freightliner® (M2 106, Custom Chassis), International®\/Navistar®, Ford® (F-650, F-750 with 6.7L Cummins), and RAM® 2500\/3500 chassis cabs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBuses \u0026amp; Commercial Transit:\u003c\/b\u003e Blue Bird®, Thomas Built Buses®, and IC Bus® commercial and school buses.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eConstruction, Agricultural, \u0026amp; Industrial Equipment:\u003c\/b\u003e Komatsu® excavators, Case IH® tractors, Hyundai® wheel loaders, and stationary power generators driven by QSB 6.7 engines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eFan Support \u003c\/b\u003eis a heavy-duty structural hub and bearing bracket mounted on the front gear housing of Cummins® ISB 6.7 and QSB 6.7 diesel engines.\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e1. What is it?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003ePart serves as the central rotational anchor for the engine’s radiator cooling fan and drive pulley. It houses a heavy-duty double-row roller bearing pressed into a cast-iron mounting bracket, isolating radial loads generated by the serpentine belt and fan clutch while maintaining precise alignment.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e2. Core Functions \u0026amp; Technical Features\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRotational Support \u0026amp; Alignment:\u003c\/b\u003e Holds the fan pulley and clutch in exact alignment with the accessory drive system, preventing belt slippage, throw, or uneven rib wear.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eHeavy-Duty Load Absorption:\u003c\/b\u003e Absorbs severe rotational vibration and gyroscopic forces exerted by large, multi-blade radiator cooling fans during engagement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eIntegrated Sealed Bearings:\u003c\/b\u003e Features high-temperature internal roller bearings pre-packed with synthetic grease to withstand high engine bay thermal stress without frequent maintenance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003ePrecision Structural Mount:\u003c\/b\u003e Cast from high-tensile ductile iron to prevent flexing or fatigue fracturing under full cooling load.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSigns of Faulty\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e1. High-Pitched Whining, Grinding, or Squealing from Engine Front\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSymptom:\u003c\/b\u003e A sharp grinding, metallic growl, or loud screeching noise originating from the upper front drive belt area that changes pitch with engine RPM.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCause:\u003c\/b\u003e Internal double-row bearings losing lubrication, causing metal-to-metal friction and bearing race scoring inside the support hub.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e2. Visible Fan Wobble, Pulley Play, or Belt Misalignment\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSymptom:\u003c\/b\u003e The engine fan blade\/clutch wobbles noticeably while idling, or the drive pulley exhibits physical play when rocked by hand (engine off).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCause:\u003c\/b\u003e Severe internal bearing wear or shaft play, causing the pulley flange to tilt out of alignment with the main serpentine belt.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e3. Excessive Serpentine Belt Wear, Chirping, or Shredding\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSymptom:\u003c\/b\u003e The drive belt continuously chirps, shows uneven rib wear, strays off the pulley track, or frays along the edges.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCause:\u003c\/b\u003e The tilted fan support shaft misaligns the belt, throwing extra lateral tension on adjacent pulleys (alternator, tensioner, water pump).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e4. Engine Overheating \/ Intermittent Radiator Fan Engagement\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSymptom:\u003c\/b\u003e Engine coolant temperatures climb abnormally high, especially under heavy load or at low road speeds.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCause:\u003c\/b\u003e Increased mechanical resistance from a binding fan support bearing preventing the fan from reaching its full engaged rotational speed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer information\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eCummins®\u003c\/strong\u003e is a worldwide leader in the production of engines, agricultural components, and other power-generating devices for various industries, including medium and heavy duty trucks, light commercial vehicles, buses, agriculture, and construction. Founded in 1919, this company stays true to its mission of making people's lives better by continuously improving its product line-up and introducing new solutions for a more prosperous world. Its core values—integrity, diversity and inclusion, excellence, caring, and teamwork—are what make it a successful company today—a worldwide leader with a network of more than 600 company-owned and independent distributors and almost 6,000 dealers in approximately 190 countries.\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003cbr\u003eFirst Truck Parts offers a \u003cstrong\u003e365-days warranty\u003c\/strong\u003e for all types of parts and in any condition. The warranty applies only to buyers who have placed an order on our website.\u003c\/p\u003e","brand":"Cummins®","offers":[{"title":"Default Title","offer_id":49340795650292,"sku":"5261322","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/1479\/5764\/files\/5261322_1.jpg?v=1788804086","url":"https:\/\/firsttruckparts.com\/en-ca\/products\/5261322-genuine-cummins%c2%ae-fan-support-for-isb-6-7-qsb-6-7","provider":"First Truck Parts","version":"1.0","type":"link"}