MACK part description

BELT TENSIONER - old# 21819687

Mack Belt Tensioner

Maximize engine efficiency and accessory operation with the Mack Belt Tensioner. Its advanced design promotes optimal belt tension, which is crucial for the smooth operation of your truck’s alternator, pumps, and other vital engine parts. By preventing slippage and reducing the risk of overheating, the Mack 24201573 ensures that your truck operates at peak efficiency, regardless of load or road conditions.

Features & Benefits

  • Made from high-grade materials to withstand the rigorous demands of heavy duty trucking
  • Ensures consistent power delivery to critical accessories, such as the alternator and water pump, for uninterrupted operation
  • Compatible with a wide range of Mack truck models for perfect fit and function
  • Minimizes wear on belts and other engine components, enhancing longevity and reducing maintenance costs
  • Reliable tensioning helps prevent sudden belt failures, reducing the risk of accidents and breakdowns

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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