2027 Peterbilt 579 | 2027 Kenworth T680 — Service brakes, air: supply: quick release valve
Published July 9, 2026 · Recall initiated: July 8, 2026
Summary
NHTSA records recall 26V442000, published July 9, 2026 and initiated July 8, 2026. Recalling firm: PACCAR Incorporated; 2027 Peterbilt 579 | 2027 Kenworth T680 — Service brakes, air: supply: quick release valve.
What's the hazard
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.
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.
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Recall details
- Brand
- PETERBILT
- Model
- 579
- Manufacturer
- PACCAR Incorporated
- Lot
- 2027 PETERBILT 579 | 2027 KENWORTH T680
- Risk classification
- V
- Country
- US
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Questions about this recall
Was 2027 Peterbilt 579 | 2027 Kenworth T680 — Service brakes, air: supply: quick release valve recalled?
Yes. NHTSA published recall 26V442000 on July 9, 2026. Reported hazard: 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.
What should I do if I have this product?
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.
How do I know if my unit is part of the recall?
Compare your product details with the notice. Brand: PETERBILT. Model: 579.