{"product_id":"dorman-621-591-engine-cooling-fan-blade","title":"Dorman 621-591 Engine Cooling Fan Blade","description":"\u003ch2\u003eOverview of the Dorman 621-591 Engine Cooling Fan Blade\u003c\/h2\u003e\u003cp\u003eThe Dorman 621-591 engine cooling fan blade is designed specifically for Ford F-250 Super Duty and F-350 Super Duty trucks. Engineered to maintain optimal engine temperature, this fan blade supports efficient airflow and reliable cooling performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e9 blades with a 625 mm diameter for effective air movement\u003c\/li\u003e\n\u003cli\u003eDurable metal and plastic blade construction with forward align fin design\u003c\/li\u003e\n\u003cli\u003eYellow blade color for easy identification\u003c\/li\u003e\n\u003cli\u003eClockwise rotation with a maximum speed of 3000 RPM\u003c\/li\u003e\n\u003cli\u003eSteel hub with 10 mm depth and 220 mm bolt circle diameter\u003c\/li\u003e\n\u003cli\u003ePusher airflow type for enhanced cooling efficiency\u003c\/li\u003e\n\u003cli\u003eStandard replacement grade for dependable performance\u003c\/li\u003e\n\u003cli\u003eMounting hardware not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman 621-591 engine cooling fan blade features nine blades measuring 625 mm in diameter, constructed from a combination of metal and plastic materials. The forward align fin blade type is designed to push air efficiently through the radiator, supporting the cooling system of Ford F-250 Super Duty and F-350 Super Duty models. The fan blade rotates clockwise and can operate at speeds up to 3000 RPM, ensuring consistent airflow under demanding engine conditions. The steel hub, with a depth of 10 mm and a bolt circle diameter of 220 mm, provides a secure and stable mounting point. This standard replacement part is engineered to meet OEM specifications, making it a reliable choice for maintaining engine cooling performance.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis engine cooling fan blade is compatible with the following Ford models:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFord F-250 Super Duty\u003c\/li\u003e\n\u003cli\u003eFord F-350 Super Duty\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIt is designed to replace worn or damaged fan blades that may cause overheating, reduced airflow, or engine cooling inefficiency.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by This Fan Blade\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOverheating due to damaged or warped fan blades\u003c\/li\u003e\n\u003cli\u003eReduced engine cooling efficiency from broken or missing blades\u003c\/li\u003e\n\u003cli\u003eExcessive engine temperature fluctuations\u003c\/li\u003e\n\u003cli\u003eNoise or vibration caused by imbalanced fan blades\u003c\/li\u003e\n\u003cli\u003eFailure of the cooling system to maintain proper airflow\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure the fan blade rotation matches the clockwise direction specified\u003c\/li\u003e\n\u003cli\u003eVerify bolt circle diameter of 220 mm for proper fitment\u003c\/li\u003e\n\u003cli\u003eCheck hub depth of 10 mm for compatibility with your vehicle’s fan clutch\u003c\/li\u003e\n\u003cli\u003eMounting hardware is not included; reuse existing hardware or acquire appropriate bolts\u003c\/li\u003e\n\u003cli\u003eInspect the cooling fan assembly for damage before installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eThe Dorman 621-591 engine cooling fan blade is manufactured to meet standard replacement grade requirements, ensuring reliable performance and durability. While mounting hardware is not included, the fan blade is designed to OEM specifications for Ford F-250 Super Duty and F-350 Super Duty trucks. Please consult Dorman’s warranty policy for specific coverage details.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":44029638607029,"sku":"BKKY-621-591","price":120.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_621591_Fro.jpg?v=1775009632","url":"https:\/\/www.partcatalog.com\/products\/dorman-621-591-engine-cooling-fan-blade","provider":"PartCatalog","version":"1.0","type":"link"}