NHTSA safety recall
Recall 26V442000: SERVICE BRAKES, AIR:SUPPLY:QUICK RELEASE VALVE
PACCAR Incorporated · Reported to NHTSA Jul 8, 2026
Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.
Check a VIN on NHTSA.govWhat this recall covers
NHTSA's campaign record, quoted as published
The 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."
The risk
An incorrectly installed quick release valve that does not function properly can increase the risk of a crash.
The remedy
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.
A safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
Campaign details
Identifiers and dates as filed with NHTSA
- Manufacturer
- PACCAR Incorporated
- Manufacturer's campaign number
- 26PACC
- NHTSA campaign number
- 26V442000
- Units potentially affected
- 8
- Report received
- Jul 8, 2026
- Production range
- Mar 12, 2025 – Feb 10, 2026
- Campaign type
- Vehicle
- Federal safety standard (FMVSS)
- 121
Vehicles covered
3 model years across 2 models
Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.