Not Yet Classified

This recall has not yet been classified by risk level.

2020 PETERBILT 520 Recalled by PACCAR Incorporated — SERVICE BRAKES, AIR

Date: September 16, 2021
Company: PACCAR Incorporated
Status: Ongoing
Source: NHTSA

What You Should Do

Stop using this product immediately. Do not consume, use, or distribute it.

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.

Affected Products

2020 PETERBILT 520. 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."

Why Was This Recalled?

A missing quick release valve cannot ensure correct rear brake release timing, increasing the risk of a crash or injury.

Where Was This Sold?

Nationwide

About PACCAR Incorporated

PACCAR Incorporated has 99 total recalls tracked by RecallDetector.

Related Recalls

Data sourced from the NHTSA. Last updated March 27, 2026. View original report