Skip to content
AnyRecalls

Vehicle recall 21V328000 · May 10, 2021

Peterbilt 348 and 579

The spring brake chamber may have been assembled with incorrect springs that were out of specification, which may cause the pressure plate to shift.

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

Summary
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.
Consequence
The pressure plate may tear the diaphragm, causing a loss of air pressure and increasing the risk of a crash.
Remedy
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.
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.

Recall details

NHTSA campaign
21V328000
Reported to NHTSA
May 10, 2021
Filed by
PACCAR Incorporated
Manufacturer campaign
21PBE
Owner notification
July 9, 2021
Vehicles potentially affected
13
Initiated by
the manufacturer
Components
Service brakes, air › Disc › Chamber; Service brakes, air
Recall 21V328000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

Has your Peterbilt been repaired?

Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.

NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Peterbilt dealer can also check your VIN. Recall repairs are free.