This recall has not yet been classified by risk level.
2021 PETERBILT 579 Recalled by PACCAR Incorporated — SERVICE BRAKES, AIR:DISC:CHAMBER
What You Should Do
Stop using this product immediately. Do not consume, use, or distribute it.
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.
Affected Products
2021 PETERBILT 579. 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.
Why Was This Recalled?
The pressure plate may tear the diaphragm, causing a loss of air pressure and increasing the risk of a crash.
Where Was This Sold?
Nationwide
About PACCAR Incorporated
PACCAR Incorporated has 99 total recalls tracked by RecallDetector.
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Data sourced from the NHTSA. Last updated March 27, 2026. View original report