Zf North America recall: Service brakes, air
What is wrong
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.
What could happen
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.
The fix
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.
Vehicles covered
- Zf North America Brake Chamber
Facts
- NHTSA recall number
- 25E027000
- Type
- Equipment
- Filed by
- Nova Bus (Us) Inc.
- Reported to NHTSA
- Apr 14, 2025
- Owners notified
- Aug 1, 2025
- Vehicles or items affected
- 2,090
- Started by
- The manufacturer
- Built
- –
- Part
- Service brakes, air › Disc › Chamber
- Maker's own recall number
- CR5720
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.
To check one car, enter its 17-character VIN on the official NHTSA page: a recall may cover only some vehicles of a model year.
Recall data: National Highway Traffic Safety Administration (NHTSA). Nebula is not affiliated with or endorsed by NHTSA.