NHTSA · Vehicle · Recall 26V442000 · Recalled July 8, 2026
Paccar Incorporated Service Brakes, Air recall (26V442000)
Hazard: An incorrectly installed quick release valve that does not function properly can increase the risk of a crash.
What to do: 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.
View the official NHTSA record for campaign 26V442000 (api.nhtsa.gov) ↗
To check whether your vehicle is affected and unrepaired, look up your VIN on NHTSA’s recall search ↗.
Description
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."
Affected vehicles
NHTSA lists 3 affected year / make / model configurations across 2 makes (Kenworth, Peterbilt). Every model below has its own page; the full year list is under “Identifying details”.
Companies & origin
Identifying details (verbatim from the notice)
Source: National Highway Traffic Safety Administration. This page mirrors the official public-domain record verbatim; the linked government source is authoritative. Source last checked July 24, 2026 at 2:00 AM UTC.