ZF North America Brake Chamber (ZF) – Brake Replacement (2025)
Hazard assessment based on recall description.
This AI-generated summary is provided for general informational purposes only and is derived from publicly available recall notices. It supplements but does not replace official agency classifications or safety instructions.
Check Your Product
According to the National Highway Traffic Safety Administration (NHTSA)
Product
ZF NORTH AMERICA BRAKE CHAMBER
Brand
ZF NORTH AMERICA
Lot Codes / Batch Numbers
Not specified in NHTSA notice. Check official source for details.
Nova Bus (US) Inc. is recalling certain ZF NORTH AMERICA BRAKE CHAMBER equipment due to service brakes, air:disc:chamber issues. A brake chamber air leak may cause the brakes to engage unexpectedly, which can overheat the brakes and increase the risk of a fire. Additionally, une.
Summary derived from NHTSA notice
Reason for Recall
As stated by NHTSA
Nova Bus (US) Inc. (Nova Bus) is recalling certain ZF North America Knorr-Bresme 20/22-57 brake chambers, with part number K038830N00, sold as replacement parts for certain buses. The brake chamber may have been improperly manufactured, which can result in an air leak.
Reported concern (NHTSA)
A brake chamber air leak may cause the brakes to engage unexpectedly, which can overheat the brakes and increase the risk of a fire. Additionally, unexpected braking can increase the risk of a crash.
Recommended Action
Per NHTSA guidance
Nova Bus will replace the brake chambers, free of charge. Owner notification letters were mailed August 21, 2025. Owners may contact Nova Bus customer service at 1-450-472-6410. Nova Bus's number for this recall is CR5720.
Verify this information on the official source
For complete details and official instructions, check the National Highway Traffic Safety Administration (NHTSA) directly.
View official NHTSA recall noticePage updated: Jan 10, 2026