PETERBILT 2020 PETERBILT 520 Recall
Check Your Product
According to the National Highway Traffic Safety Administration (NHTSA)
Product
2020 PETERBILT 520
Brand
PETERBILT
Lot Codes / Batch Numbers
Not specified in NHTSA notice. Check official source for details.
Products Sold
Model Year 2020
PACCAR Incorporated is recalling certain 2020 PETERBILT 520 vehicles due to service brakes, air issues. A missing quick release valve cannot ensure correct rear brake release timing, increasing the risk of a crash or injury..
Summary derived from NHTSA notice
Reason for Recall
As stated by NHTSA
PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 520 vehicles. The quick release valve on the rear brake signal hose may be missing. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Reported concern (NHTSA)
A missing quick release valve cannot ensure correct rear brake release timing, increasing the risk of a crash or injury.
Recommended Action
Per NHTSA guidance
Dealers will inspect the vehicles for a missing quick release valve, and install one if necessary, free of charge. Owner notification letters were mailed on October 7, 2021. Owners may contact PACCAR's customer service at 1-940-591-4220 (Peterbilt). PACCAR's number for this recall is 21PBK.
Verify this information on the official source
For complete details and official instructions, check the National Highway Traffic Safety Administration (NHTSA) directly.
View official NHTSA recall noticePage updated: Jan 10, 2026