NHTSA Recall 21V720000: Service brakes, air
PACCAR Incorporated reported this safety recall to NHTSA on , covering an estimated 15 vehicles. It affects 2020–2021 Peterbilt 520.
| NHTSA campaign | 21V720000 |
|---|---|
| Manufacturer campaign | 21PBK |
| Component | SERVICE BRAKES, AIR |
| Report received | September 16, 2021 |
| Owner notification | October 7, 2021 |
| Initiated by | Manufacturer |
Defect
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."
Safety risk
A missing quick release valve cannot ensure correct rear brake release timing, increasing the risk of a crash or injury.
Remedy
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.
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.nhtsa.gov.
Vehicles covered by recall 21V720000
Being listed here means the campaign covers the model year, not that every car was built with the defect or is still unrepaired. Enter your VIN above to check your specific vehicle. Recall repairs are free at authorised dealers. Source: NHTSA, October 2026.