MACK part description

BELT TENSIONER

Mack Accessory Drive Belt Tensioner

The Mack Accessory Drive Belt Tensioner plays a crucial role in maintaining optimal tension within the accessory drive system of your Mack truck. Unlike some aftermarket tensioners, the Mack 21714847 utilizes a high-quality, built-in spring mechanism that applies consistent pressure. This ensures optimal performance of vital engine components, like the alternator, power steering pump, and air conditioning compressor, by preventing slippage and premature belt wear. This translates to a smoother ride, improved fuel efficiency, and extended lifespan for your belts and connected accessories.

Features & Benefits

  • Maintains correct belt tension for efficient operation of engine accessories
  • Reduces belt slippage and extends the lifespan of your accessory drive belt
  • Contributes to optimal engine performance, potentially leading to better fuel economy
  • Robust design ensures long-lasting performance and reliable service
  • A genuine replacement part that helps maintain the integrity and longevity of your Mack vehicle

Product Description

BELT TENSIONER

Mack trucks are built to last, but when the time for repair and maintenance comes it’s strongly recommended to use genuine Mack® components. Designed and manufactured according to strict OEM specifications, Mack parts offer the same engineering and performance as their stock equivalent. This ensures a seamless fit, smooth installation, and reliable operation overall. Mack offers a wide range of genuine parts, including engine, exhaust, transmission, cab, and body parts and accessories. It also offers remanufactured components that offer the same good-as-new quality at a more accessible price range. All genuine Mack parts are tested in both the laboratory and field environments to ensure they meet or exceed industry standards.

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