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."
Compare the exact product and every lot, model, serial range or date listed in the official notice. A similar name alone does not establish that your product is included.
Identifiers in this source record
2026 PETERBILT 579Manufacturer campaign: 26PACCPart: N22-1518Part: N22-1519Part: 4000-42027 PETERBILT 5792027 KENWORTH T680Vehicle: VIN plus the year, make and model. Car seat or equipment: Manufacturer, model and production date from the label. Tire: Brand, tire line, size and DOT tire identification number.
Read the vehicles identification guideWhy this notice was issued
An incorrectly installed quick release valve that does not function properly can increase the risk of a crash.
Official 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.
Follow the specific instructions and use the contact details in the announcement if you need help confirming a match or arranging the remedy.
Read the full official instructionsProduct & source details
- Product
- 2026 PETERBILT 579
- Brand or manufacturer
- PETERBILT
- Source
- NHTSA
- Notice type
- Recall
- Source reference
- 26V442000
- Category
- Vehicles & road safety