Incorrectly installed quick release valve/fmvss 121
Defect Summary
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."
Safety 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.
Similar Recalls
Other recalls from Paccar Incorporated or involving Service Brakes, Air.
FAQ: Recall 26V442000
Your rights, the repair process, and what each field on this page means.
What is recall 26V442000?
NHTSA recall 26V442000 was issued by Paccar Incorporated on July 8, 2026. It addresses: Incorrectly installed quick release valve/fmvss 121. The recall affects approximately 8 vehicles, with the defect involving the Service Brakes, Air component.
How do I get this recall repaired?
Contact any authorized Paccar Incorporated dealer and reference NHTSA recall ID 26V442000 or the manufacturer campaign number 26PACC. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-08-17. For the most current official notice, visit nhtsa.gov/recalls.