PACCAR Recalls Peterbilt 579 and Kenworth T680 Tractors
Areazine synthesizes this NHTSA vehicle recall directly from NHTSA's official public data feed. See our methodology for full source attribution and refresh cadence.
PACCAR is recalling certain 2026-2027 Peterbilt 579 and 2027 Kenworth T680 tractors due to an incorrectly installed quick release valve in the air brake system.
What this NHTSA vehicle recall tells you, and what most readers miss
This notice was issued by NHTSA on August 5, 2026 and geographically references United States. Its severity classification of "high" signals how the issuing agency weighs the risk of harm if no action is taken - "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to - Vehicle Recalls - determines the consumer-protection framework behind it, which shapes what remedies (refunds, replacements, repairs, or the recall itself) are available to affected consumers and which agency holds statutory responsibility for enforcement.
Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to verify its scope, source, and timestamp, then compare related notices without assuming that one record proves a broader trend.
Areazine pairs this record with the original agency URL so you can check the primary source before acting. Its related labels are recall, product-safety, nhtsa, Tractor.
What Happened
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."
Which Products Are Affected
The recall affects 2026-2027 Peterbilt 579 and 2027 Kenworth T680 tractors, with a total of 24 units affected. The NHTSA Campaign Number is 26V442000 and PACCAR's recall number is 26PACC.
What You Should 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.
Why This Matters
An incorrectly installed quick release valve that does not function properly can increase the risk of a crash.
Source
NHTSA Campaign 26V442000 - PACCAR Incorporated
Original source: NHTSA Official Notice ↗
Related Vehicle Recalls
All Vehicle Recalls →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NHTSA vehicle recall: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,213 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 5, 2026.
Frequently Asked Questions
Common questions about this NHTSA vehicle recall.