Recall 25E027000: Service Brakes, Air, Disc, Chamber

NHTSA recall 25E027000 · announced April 14, 2025 · Zf · 2,090 units affected

The problem

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.

The risk

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.

What to do

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.

Official NHTSA recall notice →

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.

Source: National Highway Traffic Safety Administration public recall data. This page reports official records and is not legal, medical, or repair advice.