Image is for illustration purposes only. Actual part may vary.

400-10212

SLACK ADJUSTOR (AUTO)

This is a Haldex automatic slack adjuster for the air brake system on heavy-duty trucks and trailers. It automatically maintains the correct clearance between the brake shoes and drum as the linings wear, ensuring consistent stopping power and preventing uneven tire and brake wear. Designed for trailer axle applications with 16.5-inch brake assemblies, it has a 6-inch arm, a 1.5-inch 28-spline camshaft bore, and zero offset. You typically replace it when the adjuster seizes, fails to adjust, or as part of a brake overhaul.