Frequently Asked Questions About Freightliner Century 112/120 Brake Chambers & Acc.

Will these brake chambers fit my specific year Century truck, and are they DOT approved?

Our brake chambers are designed to fit Freightliner Century Class 112 and 120 models from 1996-2011. However, we strongly recommend verifying your existing brake chamber type (Type 20, 24, or 30) and stroke length before ordering. All chambers we carry meet DOT FMVSS-121 standards and are suitable for highway use. Check your truck's build sheet or existing chamber markings to ensure proper fitment.

What's the difference between standard and long-stroke brake chambers, and which do I need?

Standard stroke chambers typically have a 2.5" stroke length, while long-stroke chambers extend to 3". Long-stroke chambers are required on many newer Century models (typically 2005+) and provide better braking performance with automatic slack adjusters. You can identify your current type by checking the data tag on your existing chamber or measuring the pushrod travel. Using the wrong stroke length can result in brake adjustment issues and reduced stopping power.

How difficult is it to replace brake chambers, and what special tools are required?

Brake chamber replacement requires intermediate mechanical skills and proper safety equipment. You'll need a caging bolt tool, appropriate wrenches (typically 3/4" and 7/8"), and potentially a brake chamber clamp for safe removal. Always cage the spring brake before removal to prevent injury. The job typically takes 30-45 minutes per chamber. Many customers recommend having a certified technician perform the installation, especially if you're replacing spring brake chambers, due to the compressed spring hazard.

Are aftermarket brake chambers as reliable as OEM Bendix or Haldex units?

We carry both OEM and quality aftermarket options. OEM chambers from Bendix and Haldex typically last 500,000-700,000 miles with proper maintenance. Premium aftermarket brands like MGM and Gunite offer comparable performance at 20-30% less cost, with many drivers reporting 400,000+ mile service life. The key difference is often the warranty period - OEM units usually carry 3-year warranties while aftermarket typically offer 1-2 years. For severe-duty applications or if you prefer maximum longevity, OEM is recommended.

What accessories should I replace when changing brake chambers?

When replacing brake chambers, inspect and consider replacing: clevis pins and bushings (these wear and can cause slack adjuster misalignment), mounting studs and nuts (check for thread damage or corrosion), air line fittings and hoses (look for cracks or leaks), and dust plugs for the pushrod. Many technicians also recommend replacing the slack adjuster if it's over 300,000 miles old. These small parts are inexpensive but critical for proper brake operation and can prevent premature chamber failure.