NHTSA recall 26V442000 · Jul 8, 2026
PACCAR Incorporated: Incorrectly Installed Quick Release Valve/FMVSS 121
Product
2026-2027 Peterbilt 579 and 2027 Kenworth T680 tractors
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.
Got a car, truck or motorcycle? The surest check is your 17-character VIN, which is on your registration, insurance card, or the driver-side dashboard. NHTSA's free lookup shows any open recall that hasn't been repaired on that exact vehicle.
Check my VIN on NHTSA.govRecall details
- 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."
- Component
- SERVICE BRAKES, AIR
- Recall type
- Vehicle
- Potentially affected
- 8
- Manufacturer campaign number
- 26PACC
Source: National Highway Traffic Safety Administration (NHTSA) notice.
Copied from the agency record without changes. Data as of Oct 14, 2026, 12:58 AM EDT. The agency notice is the final word.
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