Peterbilt recall: Service brakes, air
What is wrong
PACCAR Incorporated (PACCAR) is recalling certain 2021 Peterbilt 348 and 579 vehicles. The spring brake chamber may have been assembled with incorrect springs that were out of specification, which may cause the pressure plate to shift.
What could happen
The pressure plate may tear the diaphragm, causing a loss of air pressure and increasing the risk of a crash.
The fix
Dealers will replace brake chambers, free of charge. Owner notification letters were mailed on July 9, 2021. Owners may contact PACCAR (Peterbilt) customer service at 1-940-591-4220. PACCAR's number for this recall is 21PBE.
Vehicles covered
- Peterbilt 348 2021
- Peterbilt 579 2021
Facts
- NHTSA recall number
- 21V328000
- Type
- Vehicle
- Filed by
- Paccar Incorporated
- Reported to NHTSA
- May 10, 2021
- Owners notified
- Jul 9, 2021
- Vehicles or items affected
- 13
- Started by
- The manufacturer
- Built
- –
- Part
- Service brakes, air › Disc › Chamber; Service brakes, air
- Maker's own recall number
- 21PBE
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Other recalls for the same vehicles
- Kenworth / Peterbilt recall: Seat belts Oct 14, 2026
- Kenworth / Peterbilt recall: Seats Aug 21, 2026
- Kenworth / Peterbilt recall: Electrical system Jul 27, 2026
- Kenworth / Peterbilt recall: Service brakes, air Jul 8, 2026
- Kenworth / Peterbilt recall: Exterior lighting Jun 26, 2025
- Kenworth / Peterbilt recall: Electrical system Mar 24, 2025
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.