Brake
Hardware, Fasteners and Fittings
Air Brake Automatic Slack Adjuster
MACK 21799522 Air Brake Automatic Slack Adjuster - Front

MACK 21799522 Air Brake Automatic Slack Adjuster - Front

Name: Mack 21799522 Air Brake Automatic Slack Adjuster - Front
SKU: 21799522
Price: 186.99 USD
Availability: InStock

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Mack 21799522 Air Brake Automatic Slack Adjuster Air Brake Automatic Slack Adjuster - Front

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$186.99

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In Stock

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MACK 21799522 Part Description

Manufacturer

MACK

Features & Benefits

Manual adjustment is reserved for brake or wheel service procedures
Boot seals keep contamination away from the internal mechanism
Extends service intervals between routine brake system checks
Fits the camshaft used at this axle position with matching spline count

Mack Air Brake Automatic Slack Adjuster

As brake linings wear, the Mack Air Brake Automatic Slack Adjuster maintains shoe-to-drum clearance within its designed range at this front-axle position. Internal mechanisms take up that clearance automatically with each brake application instead of requiring manual adjustment at every service interval. The Mack 21799522 splines onto the same camshaft used at this position and matches the arm length of the adjuster it replaces. That matched interface keeps the automatic adjustment mechanism working through normal lining wear.

SLACK ADJUSTER

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MACK 21799522 Manufacturer Information

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.