Peterbilt, Kenworth recall — Quick Release Valve
NHTSA · July 8, 2026
- NHTSA recall campaign 26V442000 (Peterbilt, Kenworth), reported .
- Potentially affected vehicles: 8.
- Component: Quick Release Valve.
- Details as of ; the linked official notice is authoritative for lot codes, VINs, and remedies.
- Agency
- NHTSA
- Posted
- Recalling firm
- PACCAR Incorporated
- Source ID
- 26V442000
Defect
PACCAR Incorporated (PACCAR) is recalling certain 2026-2027 Peterbilt 579 and 2027 Kenworth T680 tractors. The trailer air connection quick release (QR) valve in the air brake system may have been incorrectly installed, which can cause the trailer to become unstable after the driver applies the brakes. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Consequence
An incorrectly installed quick release valve that does not function properly can increase the risk of a crash.
Corrective action
Paccar inspected and reinstalled the valves, as necessary, free of charge. All affected tractors have been repaired and therefore no owner notification letters are necessary. Owners may contact Peterbilt's customer service at 1-940-591-4220 and Kenworth's customer service at 1-425-828-5888. PACCAR's number for this recall is 26PACC.
Affected vehicles
| Make | Model | Year |
|---|---|---|
| Kenworth | T680 | 2027 |
| Peterbilt | 579 | 2026 |
| Peterbilt | 579 | 2027 |
Related: Vehicle recalls · All recall events