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Recall data is sourced from official U.S. government agencies (CPSC, FDA, NHTSA, USDA) and processed using AI to improve readability. This site is not affiliated with or endorsed by any government agency. Always refer to the original agency notice for authoritative information.

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Medium RiskNHTSA
Vehicle Parts & Equipment/Braking Systems

ZF Knorr-Bresme Brake Chambers Recalled for Air Leak and Fire Risk

Agency Publication Date: April 14, 2025
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Summary

Nova Bus (US) Inc. is recalling approximately 2,090 ZF North America Knorr-Bresme 20/22-57 brake chambers with part number K038830N00. These chambers, sold as replacement parts for various buses, may have been manufactured improperly, causing an air leak. Nova Bus will replace these affected brake chambers free of charge to prevent potential safety hazards.

Risk

An air leak in the brake chamber can cause the vehicle's brakes to engage suddenly and unexpectedly. This can lead to overheated brakes, which increases the risk of a fire, and can also cause a loss of vehicle control, increasing the risk of a crash.

What You Should Do

  1. This recall involves ZF North America Knorr-Bresme 20/22-57 brake chambers with part number K038830N00, which were sold as replacement parts for buses.
  2. Check your vehicle's maintenance records or inspect the brake chambers to identify if part number K038830N00 is installed.
  3. If you identify a recalled brake chamber, contact Nova Bus customer service at 1-450-472-6410 to schedule a free replacement.
  4. When contacting the company, refer to Nova Bus recall number CR5720.
  5. Call the NHTSA Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153) or go to www.nhtsa.gov/recalls for additional information.

Your Remedy Options

๐Ÿ”„Free Replacement

Free replacement of the brake chambers.

How to: Nova Bus will replace the brake chambers, free of charge. Owners should contact Nova Bus customer service at 1-450-472-6410 regarding recall CR5720.

Affected Products

Product: ZF North America Knorr-Bresme Brake Chamberby ZF North America Knorr-Bresme
Part / Model:
K038830N00
20/22-57

Sold as replacement parts for certain buses.

Additional Information

Agency: National Highway Traffic Safety Administration (NHTSA)
Recall ID: 25E027000
Status: Active
Manufacturer: Nova Bus (US) Inc.
Sold By: Nova Bus (US) Inc.
Units Affected: 2,090 vehicles(72% estimated defective)
Park Vehicle: No
Park Outside: No
OTA Update: No
Product Type: Equipment (E)
Recall Classification: Safety Defect
Owner Notification Date: August 1, 2025
Notes: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1- 888-275-9171), or go to www.safercar.gov.
Distributed To: Nationwide
Manufacturer Recall #: CR5720
Agency Last Updated: August 29, 2025

Were You Affected by This Recall?

If you or a family member were harmed by this recalled product, you may have legal rights. Consider consulting a consumer protection attorney to understand your options for compensation.

Find an Attorney

This is general information, not legal advice. Go Backs is not a law firm and does not provide legal services.

AI-Enhanced Content: The summary, action steps, and risk assessment on this page were generated by AI from official government recall data to improve readability. This is not legal or medical advice. Always refer to the official agency sources below for authoritative information.

Sources: NHTSA Notice ยท Raw API Response