MACK part description

AUTO SLACK

Mack Air Brake Automatic Slack Adjuster

The Mack Air Brake Automatic Slack Adjuster automatically maintains proper brake adjustment in your heavy-duty or medium-duty Mack truck's air brake system. This eliminates the need for manual adjustments, improving safety and efficiency for your fleet. Unlike many aftermarket parts, the Mack 3398-AS1169 is a genuine OEM replacement specifically designed and engineered to match the performance characteristics of your Mack truck.

Features & Benefits

  • Ensures consistent and optimal brake lining engagement, reducing wear and tear and extending brake life
  • Engineered with the same high-quality materials and tolerances as the original part
  • Specifically tailored for the demanding requirements of heavy-duty applications
  • Offers ease of installation to minimize downtime and labor costs for servicing
  • Rigorously tested under the most extreme conditions for maximum durability and performance

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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