Shiyan Mingqi Industry and Trade Co., Ltd
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Dongfeng Cummins ISDE/6CT/QSB Engine Belt Tensioner for Construction Equipment – Part No. 3976831
Dongfeng Cummins ISDE series, 6CT series, and QSB series diesel engines—widely utilized in heavy-duty construction equipment such as excavators, wheel loaders, motor graders, and concrete mixers—rely on precision-engineered belt tensioning systems to ensure optimal performance, longevity, and operational reliability. This genuine OEM-compatible belt tensioner, specifically designed for seamless integration with those engine platforms, maintains consistent belt alignment and proper drive belt tension under demanding working conditions—including high ambient temperatures, prolonged duty cycles, and frequent load fluctuations. Manufactured to meet stringent Dongfeng Cummins quality standards, the tensioner features a robust cast-aluminum housing, a high-strength spring mechanism with calibrated preload, and a durable pivot arm equipped with sealed ball bearings for smooth, low-friction articulation. Its precise geometry ensures accurate mounting alignment with adjacent pulleys and accesso






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